GemWorld-DIAMOND TESTERS


GemWorld.com provides...

D I A M O N D T E S T E R S

For Lapidaryists, Jewelers, Gemologists, Estate and Insurance Appraisers, and Hobbyists.
Don't take chances!
Test the gems or diamonds before you buy.

Name-Brand-Model Description Price

CULTURE III

by JSP
One of the best on the market for the money with more features than most.

Three year limited warranty
Automatic mode requires no adjustments
Linear display gives much more information
Manual mode offers added stone size and temperature control
Adjustable gain for small stones that cannot be tested by other testers
Compensation for ambient temperatures-will not read sapphires as diamonds
Uses inexpensive replaceable 9 volt batteries
Low battery indicator
Automatic battery shut-off
Multi-purpose audio signals
Shipping weight 2 lb.

$95.00

A-Source
Diamond Tester

by Presidium
Click on photos to enlarge
The A-SOURCE DIAMOND TESTER utilizes proven thermal conductivity testing method to instantly verify the authenticity of diamonds. Functionality of Presidium DiamondMate tester for less. Operates on alkaline (AAA) batteries or direct AC current. Batteries and AC adapter not included.

FEATURES:

No waiting time between tests.

Pocket size.

Low batteries indicator.

Low battery consumption.

Carrying case - soft.

2 year factory warranty.

Shipping weight 2 lb.

List is $109.00

Our price is $97.00

AC Adaptor
add $17.50

DiamondMate
(PDMT)
Diamond Tester

by Presidium
Click on photos to enlarge
A pocket-size, thermal conductivity method of verifying the authenticity of diamonds. Operates on a rechargeable battery or AC adapter/charger. Complete with metal detector, carrying case and three- piece Nicad battery pack.

DiamondMate-A operates on alkaline AAA batteries (Not included) or AC 120/230 V adaptor (optional)

DiamondMate-C operates on rechargeable (NICAD) batteries or AC 120/230 C adaptor (Both are included),

FEATURES:

Retractable tip to ensure the accuracy and consistent pressure between the measuring probe and gemstone.

Pocket size.

No waiting time between test.

Metal detector intermittent beep

Measured diamond - continuous beep

Low battery consumption

Shipping weight 2 lb.

Model A
$ 137.00

Model C
$ 150.00

AC Adaptor
add $15.50

Ceres
CZeckpoint

Has a fully integrated metal detector that warns you if a metal setting is touched. Without the detector, the tester could be indicating diamond when you are really touching gold on a ring with CZ. Latest surface chip technology to provide repeatable and accurate readings every time. Patented electronics provide both audible and visual indication.

Various models:
CZeckpoint has built-in rechargeable Nicad battery with AC adapter/charger included.
CZeckpoint XL user-replaceable alkaline battery powered only.
Reliance AC AC power only. Built-in AC adapter. (Special Order item We may not provide)
Ceres Dual XL Moissonite/Diamond tester available. See listing below.
Ceres Secure II Moissonite only tester available. Please inquire.

Featured in all models:

Unprecedented lifetime limited warranty.

Next generation XL digital electronics.

Fast warm-up time.

Durable spring loaded XL tip.

Superior surface mount technology.

Audible & visual diamond indicator.

Battery saving auto shut off (except Reliance AC)

Protective carrying case included (except Reliance, Reliance AC)

Durable retractable tip.

Diamond/Simulant test plates and loose stone holder included.
Made in the USA. Shipping weight 2 lb.

CZeckpoint XL
List is $149.00

Our price is $129.95

CZeckpoint
List is $179.00

Our price is $149.00

PRESIDIUM
(PMT)

Moissanite
Tester II

by Presidium
Click on photos to enlarge
PMT uses technology of Capacitance and for the capacitance measurement of electrical displacemnet. PMT is designed specifically for identification of Synthetic Moissanite. The measuring procedure is very simple by touching a high sensitive measuring probe made of special polymer and reading is instantaneous. Note: PMT is recommended to be used after positive testing results for on Diamond with a Thermal Conductivity tester.

FEATURES:

Pocket size

Powered by 3 AAA batteries (Not included)

Low batteries indicator

Continuous beep when measuring moissanite

low battery comsumption

Shipping weight 2 lb.

$ 175.00

A-Source
Diamond/Moissanite
Tester

by Presidium
Click on photos to enlarge
A-SOURCE DIAMOND/MOISSANITE TESTER utilizes the combine principles of Thermal and Electrical Conductivity from their patented technology. The measuring probes together with the electronics circuitries are designed to pick up and segregate data collected from the stones via a customized micro-controller. Within a split of a second, the test result will be displayed. Operates on alkaline (AAA) batteries or direct AC current. Batteries and AC adapter not included.

FEATURES:

Surface Mount Technology.

No waiting time between tests.

Clear LED display for Diamond, Moissanite and Simulants.

Low batteries and ready indicators.

Automatic power down.

2-year manufacturer warranty.

Soft case included.

Shipping weight 2 lb.

Although
List Price
is $225.00

Our price
is only
$199.95

AC Adaptor
add $17.50

Ceres Dual XL
Diamond/Moissanite
Tester

Click on photos to enlarge
Simultaneous diamond and Moissanite tester. One-touch immediate simultaneous test. Audible beep and visual lights indicating and separating diamond from moissanite. Retractable spring-loaded durable XL tip. Superior surface mount technology. Exclusive metal warning buzzer. Portable alkaline battery powered. Unprecedented Lifetime Limited Warranty. Made in the USA. Shipping weight 2 lb.

Our price
is only
$254.95

Presidium
Reflectivity Meter
Click on photos to enlarge
PRESIDIUM Reflectivity Meter Accurately measures the quality and quantity of light reflected through the stone thus give you an instant reading of its reflective index, therefore identifying the nature of every uncoated stone. For your easy reference, the instrument has a built-in Reflectivity Chart listing the most common stones, including Synthetic Spinel, Synthetic Sapphire, Y.A.G., High Zircon, G.G.G., Cubic Zirconia, Strontium Titanate, Diamond and Synthetic Moissanite. Operates on a 9 volt battery or directly from a wall plug. (Battery and AC adapter are optional)

FEATURES:

Designed for Faceted stones, either Loose or Mounted

100% portability with batteries operated.

Used without the need of a thermal conductivity tester

Reads fast, accurate and dependable (Instantly separates Diamond from all known simulants, including Synthetic Moissanite).

Finest quality

Shipping weight 5 lb.

Although
List Price
is $212.95

Our price
is only
$203.95

Presidium
Gem Tester
(PGT)

Click on photos to enlarge
PGT/CSE provides a quick, easy, laboratory proven way to identify diamonds and separate the most popular colored gemstones from one another.

FEATURES:

Powered by two AA batteries or adaptor (included).

Measure stones from 0.02 carat.

Metal detector - continuous beep.

Retractable tip to ensure the accuracy and consistent pressure between the measuring probe and gemstone.

Large analog display with common color stone thermal range.

Fail-Safe protection--checks against diamond and simulanrt test discs.(See below for stone set)

Optional 7 piece referent stone set for consistent presense between the measuring probe and gemstone
... add $117.50

Shipping weight 5 lb.

Although
List Price
is $259.00

Our price
is only
$239.95

Duotester
(PDT)

by Presidium
Click on photos to enlarge
Portable Diamond Testing with thermal conductivity and reflectivity measuring in the same instrument. Double your confidence in testing for diamonds against all known simulants, including Synthetic Moissanite. Powered by five (5) "AA" batteries (not included) or AC adapter.

FEATURES:

Metal detector--continuous beep.

Retractable tip to ensure the accuracy and consistent pressure between the measuring probe and gemstone.

Large analog display and digital index display for common color stones, Moissanite, and diamond.

Fail-Safe protection--checks against diamond and simulanrt test discs. (See below for stone set)

Optional 7 piece referent stone set for consistent presense between the measuring probe and gemstone
... add $154.50

Shipping weight 5 lb.

$445.95
without stone set

AC Adaptor
add $23.50

D I A M O N D T E S T E R S
For Lapidaryists, Jewelers, Gemologists, Estate and Insurance Appraisers, and Hobbyists. Don't take chances! Test the gems or diamonds before you buy.
Name-Brand-Model	Description	Price
CULTURE III by JSP	One of the best on the market for the money with more features than most. Three year limited warranty Automatic mode requires no adjustments Linear display gives much more information Manual mode offers added stone size and temperature control Adjustable gain for small stones that cannot be tested by other testers Compensation for ambient temperatures-will not read sapphires as diamonds Uses inexpensive replaceable 9 volt batteries Low battery indicator Automatic battery shut-off Multi-purpose audio signals Shipping weight 2 lb.	$95.00
A-Source Diamond Tester by Presidium Click on photos to enlarge	The A-SOURCE DIAMOND TESTER utilizes proven thermal conductivity testing method to instantly verify the authenticity of diamonds. Functionality of Presidium DiamondMate tester for less. Operates on alkaline (AAA) batteries or direct AC current. Batteries and AC adapter not included. FEATURES: No waiting time between tests. Pocket size. Low batteries indicator. Low battery consumption. Carrying case - soft. 2 year factory warranty. Shipping weight 2 lb.	List is $109.00 Our price is $97.00 AC Adaptor add $17.50
DiamondMate (PDMT) Diamond Tester by Presidium Click on photos to enlarge	A pocket-size, thermal conductivity method of verifying the authenticity of diamonds. Operates on a rechargeable battery or AC adapter/charger. Complete with metal detector, carrying case and three- piece Nicad battery pack. DiamondMate-A operates on alkaline AAA batteries (Not included) or AC 120/230 V adaptor (optional) DiamondMate-C operates on rechargeable (NICAD) batteries or AC 120/230 C adaptor (Both are included), FEATURES: Retractable tip to ensure the accuracy and consistent pressure between the measuring probe and gemstone. Pocket size. No waiting time between test. Metal detector intermittent beep Measured diamond - continuous beep Low battery consumption Shipping weight 2 lb.	Model A $ 137.00 Model C $ 150.00 AC Adaptor add $15.50
Ceres CZeckpoint	Has a fully integrated metal detector that warns you if a metal setting is touched. Without the detector, the tester could be indicating diamond when you are really touching gold on a ring with CZ. Latest surface chip technology to provide repeatable and accurate readings every time. Patented electronics provide both audible and visual indication. Various models: CZeckpoint has built-in rechargeable Nicad battery with AC adapter/charger included. CZeckpoint XL user-replaceable alkaline battery powered only. Reliance AC AC power only. Built-in AC adapter. (Special Order item We may not provide) Ceres Dual XL Moissonite/Diamond tester available. See listing below. Ceres Secure II Moissonite only tester available. Please inquire. Featured in all models: Unprecedented lifetime limited warranty. Next generation XL digital electronics. Fast warm-up time. Durable spring loaded XL tip. Superior surface mount technology. Audible & visual diamond indicator. Battery saving auto shut off (except Reliance AC) Protective carrying case included (except Reliance, Reliance AC) Durable retractable tip. Diamond/Simulant test plates and loose stone holder included. Made in the USA. Shipping weight 2 lb.	CZeckpoint XL List is $149.00 Our price is $129.95 CZeckpoint List is $179.00 Our price is $149.00
PRESIDIUM (PMT) Moissanite Tester II by Presidium Click on photos to enlarge	PMT uses technology of Capacitance and for the capacitance measurement of electrical displacemnet. PMT is designed specifically for identification of Synthetic Moissanite. The measuring procedure is very simple by touching a high sensitive measuring probe made of special polymer and reading is instantaneous. Note: PMT is recommended to be used after positive testing results for on Diamond with a Thermal Conductivity tester. FEATURES: Pocket size Powered by 3 AAA batteries (Not included) Low batteries indicator Continuous beep when measuring moissanite low battery comsumption Shipping weight 2 lb.	$ 175.00
A-Source Diamond/Moissanite Tester by Presidium Click on photos to enlarge	A-SOURCE DIAMOND/MOISSANITE TESTER utilizes the combine principles of Thermal and Electrical Conductivity from their patented technology. The measuring probes together with the electronics circuitries are designed to pick up and segregate data collected from the stones via a customized micro-controller. Within a split of a second, the test result will be displayed. Operates on alkaline (AAA) batteries or direct AC current. Batteries and AC adapter not included. FEATURES: Surface Mount Technology. No waiting time between tests. Clear LED display for Diamond, Moissanite and Simulants. Low batteries and ready indicators. Automatic power down. 2-year manufacturer warranty. Soft case included. Shipping weight 2 lb.	Although List Price is $225.00 Our price is only $199.95 AC Adaptor add $17.50
Ceres Dual XL Diamond/Moissanite Tester Click on photos to enlarge	Simultaneous diamond and Moissanite tester. One-touch immediate simultaneous test. Audible beep and visual lights indicating and separating diamond from moissanite. Retractable spring-loaded durable XL tip. Superior surface mount technology. Exclusive metal warning buzzer. Portable alkaline battery powered. Unprecedented Lifetime Limited Warranty. Made in the USA. Shipping weight 2 lb.	Our price is only $254.95
Presidium Reflectivity Meter Click on photos to enlarge	PRESIDIUM Reflectivity Meter Accurately measures the quality and quantity of light reflected through the stone thus give you an instant reading of its reflective index, therefore identifying the nature of every uncoated stone. For your easy reference, the instrument has a built-in Reflectivity Chart listing the most common stones, including Synthetic Spinel, Synthetic Sapphire, Y.A.G., High Zircon, G.G.G., Cubic Zirconia, Strontium Titanate, Diamond and Synthetic Moissanite. Operates on a 9 volt battery or directly from a wall plug. (Battery and AC adapter are optional) FEATURES: Designed for Faceted stones, either Loose or Mounted 100% portability with batteries operated. Used without the need of a thermal conductivity tester Reads fast, accurate and dependable (Instantly separates Diamond from all known simulants, including Synthetic Moissanite). Finest quality Shipping weight 5 lb.	Although List Price is $212.95 Our price is only $203.95
Presidium Gem Tester (PGT) Click on photos to enlarge	PGT/CSE provides a quick, easy, laboratory proven way to identify diamonds and separate the most popular colored gemstones from one another. FEATURES: Powered by two AA batteries or adaptor (included). Measure stones from 0.02 carat. Metal detector - continuous beep. Retractable tip to ensure the accuracy and consistent pressure between the measuring probe and gemstone. Large analog display with common color stone thermal range. Fail-Safe protection--checks against diamond and simulanrt test discs.(See below for stone set) Optional 7 piece referent stone set for consistent presense between the measuring probe and gemstone ... add $117.50 Shipping weight 5 lb.	Although List Price is $259.00 Our price is only $239.95
Duotester (PDT) by Presidium Click on photos to enlarge	Portable Diamond Testing with thermal conductivity and reflectivity measuring in the same instrument. Double your confidence in testing for diamonds against all known simulants, including Synthetic Moissanite. Powered by five (5) "AA" batteries (not included) or AC adapter. FEATURES: Metal detector--continuous beep. Retractable tip to ensure the accuracy and consistent pressure between the measuring probe and gemstone. Large analog display and digital index display for common color stones, Moissanite, and diamond. Fail-Safe protection--checks against diamond and simulanrt test discs. (See below for stone set) Optional 7 piece referent stone set for consistent presense between the measuring probe and gemstone ... add $154.50 Shipping weight 5 lb.	$445.95 without stone set AC Adaptor add $23.50

What is Moissanite?
Moissanite is a silicon carbide that looks just like diamonds or CZ's but is not. Moissanite grown in laboratories is now being cut as gemstones and they are used as diamond simulants. Moissanite brings to the jeweler's table a similar index of refraction and better than twice the fire of diamond, but is only slightly less expensive due to the difficulty in growing the crystals. Moissanite is causing quite a stir in the jewelry markets. As a diamond simulant, artificial moissanite is very hard to differentiate from diamond and can fool many gemologists. It does have many similarities. It is very hard at 9.25 (diamond is 10) and it is highly refractive with an index of refraction of 2.6 - 2.7 (diamond's IR is slightly lower at 2.42). Most important, moissanite and diamond are thermally conductive unlike other diamond simulants and unfortunately it is this property that is used as the test for the authenticity of real diamonds. Differences however are clear and other tests can be used to differentiate the two. First of all, moissanite is hexagonal, not isometric and therefore it is doubly refractive unlike diamond. A close look at moissanite gemstones should show double facet edges whereas diamond's cut edges are singular in appearance. Moissanite is also slightly less dense than diamond and is rarely perfectly clear of color, having pale shades of green. Also natural flaws are absent in moissanite replaced instead by tiny, unnatural, white, ribbon-like structures that are a result of the growing process. The synthetic SiC known as carborundum has seen many uses in hightech ceramics, electrical components, abrasives, ball bearings, semi-conductors, extremely hard saws and armor. Natural moissanite is very rare and is limited to iron-nickel meteorites and a few other rare ultra-mafic igneous occurrences. Initially there were skeptics to the original meteorite findings and were attributed to the silicon carbide blades that may have been used to saw the type specimens. But this has been disputed because Dr Henri Moissan did not use silicon carbide blades to prepare the samples. There are several phases of SiC. The original mineral discovered is officially known as moissanite-6H. The (6H) refers to the hexagonal symmetry of this phase of moissanite. There are two other phases recognized as minerals: moissanite-5H and the isometric phase beta-moissanite. Moissanite is classified as an element dispite the fact, that in chemical reality, it is a compound! The reason for this is that the elemental bonds that exist between carbon and silicon are very similar to the carbon-carbon bonds of other elemental minerals such as diamond.

What is Moissanite?

Moissanite is a silicon carbide that looks just like diamonds or CZ's but is not.

Moissanite grown in laboratories is now being cut as gemstones and they are used as diamond simulants. Moissanite brings to the jeweler's table a similar index of refraction and better than twice the fire of diamond, but is only slightly less expensive due to the difficulty in growing the crystals. Moissanite is causing quite a stir in the jewelry markets.

As a diamond simulant, artificial moissanite is very hard to differentiate from diamond and can fool many gemologists. It does have many similarities. It is very hard at 9.25 (diamond is 10) and it is highly refractive with an index of refraction of 2.6 - 2.7 (diamond's IR is slightly lower at 2.42). Most important, moissanite and diamond are thermally conductive unlike other diamond simulants and unfortunately it is this property that is used as the test for the authenticity of real diamonds. Differences however are clear and other tests can be used to differentiate the two. First of all, moissanite is hexagonal, not isometric and therefore it is doubly refractive unlike diamond. A close look at moissanite gemstones should show double facet edges whereas diamond's cut edges are singular in appearance. Moissanite is also slightly less dense than diamond and is rarely perfectly clear of color, having pale shades of green. Also natural flaws are absent in moissanite replaced instead by tiny, unnatural, white, ribbon-like structures that are a result of the growing process. The synthetic SiC known as carborundum has seen many uses in hightech ceramics, electrical components, abrasives, ball bearings, semi-conductors, extremely hard saws and armor.

Natural moissanite is very rare and is limited to iron-nickel meteorites and a few other rare ultra-mafic igneous occurrences. Initially there were skeptics to the original meteorite findings and were attributed to the silicon carbide blades that may have been used to saw the type specimens. But this has been disputed because Dr Henri Moissan did not use silicon carbide blades to prepare the samples.

There are several phases of SiC. The original mineral discovered is officially known as moissanite-6H. The (6H) refers to the hexagonal symmetry of this phase of moissanite. There are two other phases recognized as minerals: moissanite-5H and the isometric phase beta-moissanite.

Moissanite is classified as an element dispite the fact, that in chemical reality, it is a compound! The reason for this is that the elemental bonds that exist between carbon and silicon are very similar to the carbon-carbon bonds of other elemental minerals such as diamond.

Purchase two to four diamond testers
and receive a 5% Discount.
Purchase five to nine diamond testers
and receive a 10% Discount.
Purchase ten or more diamond testers
and receive a 15% Discount.

Except when already discounted.

NOTE
All items are subject to availability.
Prices may change at any time.

Minimum Order is $50
Orders Less than $50 will be charged an additional $8.50

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SHIPPING, and HANDLING
Specify how you want shipped
(UPS, USPS, ground, air, 2-day, 3-day, Priority, etc.)
Calculate your costs
United States Postal Service (USPS)
or United Parcel Service (UPS)
$9.50 minimum
Add 75 cents per 5 pounds of weight for handling.
$2.00 minimum.
(UPS cannot ship to P.O. Boxes.)
or
Apply the following rates
for shipping and handling costs
anywhere in USA by carrier and service of our choice:
under 3 pounds, add $9.50,
3 pounds to 4.9 pounds, add $11.50,
5 pounds to 9.9 pounds, add $16.50,
10 pounds to 14.9 pounds, add $23.50,
15 pounds to 24.9 pounds, add $35.50,
25 pounds to 49.9 pounds, add $47.50,
50 pounds to 69.9 pounds, add $63.50,
70 pounds to 99.9 pounds, add $83.50,
100 pounds to 149.9 pounds, add $139.50,
over 150 pounds, FOB plus $15.00 for handling.
Ask for costs for shipping outside of USA.

Payment Information
We accept Cashier's check, Postal Money Orders.
We also accept personal checks ,
but allow 15 working days to clear bank processing.
Make checks and money orders payable to "Jack Slevkoff"
We no longer accept credit cards due to credit card fraud and identity theft.
No Western Union and no PayPal.

TAXES
None
We are in The California state republic
venue not the corporate venue "CA"
Info on California Sales Tax

INSURANCE
Insurance is an additional $1.50
for each increment of $100 being insured.
If you want insurance, add these charges to your order.

CHECKS
Make checks payable to
Jack Slevkoff
Personal and Business Checks must clear
before items are sent out.
Money Orders or Cashiers Checks are preferred.

WIRES
Wires are a quick way to make payment
especially for those who are outside the US.
Our Routing and Account information
will be provided upon request.

When ordering, please indicate
any specials or discounts that apply.
Thank you.

Email us at:
Jack@gemworld.com

Our temporary post (mailing) location is:

Jack Slevkoff's Prized Possessions
GemWorld.com Division
c/o 4460 West Shaw Avenue, Suite 140
Fresno [Non-Domestic]
California [Zip Exempt]
usA

For those who come in the back door
such as through a search engine
our web-site (URL) address is
"http://www.gemworld.com"

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