Moissanite Tester Pitfalls
PLEASE NOTE: Gemnostics Corporation Does Not Appear To Be In Business Any Longer, And The 2000SD Detector Has Unfortunately Not Been Available For Two Years. This Was, And Still Is, The Best Conductivity Detector Available Anywhere, Bar None.
The World's First Near Colorless and Colorless Synthetic Diamond and Moissanite Detector. (Patent Pending)
Congratulations! You have purchased a quality testing product made right here in the USA, from the first and best company the electronic Moissanite and colorless and near colorless synthetic diamond tester business.
IMPORTANT! Read the instructions carefully. Failure to follow these instructions could lead to misleading tests and improper operation. This unit is to be used AFTER the stone has been subjected to a thermal diamond test that has given a positive indication for diamond. If you have any questions about these instructions, give them a call at 888-436-7012. Gemnostic Corp. has a Graduate Gemologist on staff to answer your questions. This tester is not meant for colored synthetic diamond.
CONTENTS: One Moissketeer 2000-SD tester, one ac wall mount power source, one carrying pouch, and one loose stone holder.
TEST PROCEEDURES: After you have gotten a positive test result for diamond using a thermal diamond tester, make sure to clean off the stone with a dry jewelry cloth. DO NOT TEST A STONE THAT IS WET OR DIRTY.
1. Remove the Moissketeer 2000-SD from its carrying pouch. Take the adapter and plug it into the wall or strip outlet. If your adapter has a three prong plug, be sure to find an outlet with the same configuration. Failure to do so will lessen the sensitivity of the tester.
2. Plug the male end of the adapter cord to the hole in the back of the tester.
3. MOUNTED GOODS: Uncoil the black clip wire that is attached to the front of the unit. The ground clip is located in the black rubber boot. Squeeze the boot to open the clip, and attach the jaws of the ground clip wire to the setting of a mounted stone as close to the stone as possible.
IMPORTANT! ALWAYS HOLD MOUNTED GOODS WITH YOUR HAND ON THE RUBBER BOOT OF THE GROUND WIRE. NEVER HOLD THE PIECE SO THAT YOUR HAND COMES IN CONTACT WITH ANY BARE METAL SURFACE, INCLUDING THE METAL ALLIGATOR CLIP. THE HUMAN BODY WILL INTERFERE WITH THE TEST SENSITIVITY. NEVER TEST A PIECE YOU ARE WEARING.
TESTING MOUNTING GOODS: Hold the mounted piece to be tested with
the rubber boot of the clip in one hand. Hold the tester with
your other hand so that your thumb is near the test button on the front
of the unit, and your fingers are in contact with the metal ground plate
on the back of the tester. Press the button in. A yellow test
light will come on indicating that the unit is ready for test.
Hold the button down and place the gold sensing tip on the front of the unit on the center of the table facet of the stone being tested.
IF THE YELLOW LIGHT STAYS ON BUT NO OTHER INDICATION IS GIVEN:
A yellow light with no other light or prolonged buzzer tone indicates that
the stone tested does not indicate the electronic properties of either
synthetic Moissanite, or synthetic colorless or near colorless diamond.
Be sure that the stone being tested is well mounted and making contact
with a metal setting or mounting. A stone that is very loose can cause
an unreliable test.
5. METALERT. IF THE YELLOW LIGHT GOES OUT AND THE RED SYNTHETIC
LIGHT COMES ON WITH A PROLONGED BUZZING TONE (at least two
to three seconds): This indicates that you have touched the sensing pin
to either the setting or some other metal connected to the setting. Try
6. BOTH THE YELLOW AND RED LIGHTS ON AND A PROLONGED BUZZER
TONE ARE PRESENT AT THE SAME TIME: This indicates the properties
of an electrically conductive stone, such as Moissanite or synthetic colorless
or near colorless diamond. The Moissanite will display double refraction,
while the synthetic colorless or near colorless diamond will look identical
to natural diamond. Repeat the test, making sure that your hand is
contacting the ground plate of the back of the unit, and that the stone
is both clean and dry. If the tester gives the same indications,
have the stone examined by a gemologist to determine whether it is a diamond
synthetic or Moissanite, a diamond simulant.
TESTING LOOSE GOODS: In your box you will find a specially shaped V-groove loose stone holder. Attach the ground clip of the tester to the tail on the back of the plate, with the V-groove facing up. Place the stone to be tested table facet down and push it back into the V-groove until it fits snugly. Hold the rubber boot on the ground clip and then hold the tester as described in section 4. Press in the test button on the unit until the yellow light comes on. Place the gold sensing on any exposed surface of the stone.
IF THE YELLOW LIGHT STAYS ON BUT NO RED LIGHT
OR PROLONGED (at least two to three seconds) BUZZING TONE WITH IT:
The stone does not indicate the electronic properties of Moissanite or
synthetic colorless and near colorless diamond. Retest the stone on as
many of the exposed surfaces as possible to make sure of the results.
QUICK REVIEW AND TROUBLESHOOTING
Make sure all stones to be tested are clean and
Plug in the ac wall power adapter and then the cord into the tester.
Attach the ground lead attached to the front of the tester securely to the setting or mounting holding the test stone by squeezing the rubber boot until the clip opens and then letting it close on the setting.
Hold the piece to be tested with the rubber boot of the ground clip only! Do not let the human body come into contact with the piece to be tested. The level of sensitivity required for the purest forms of synthetic Moissanite and synthetic colorless diamond requires a clean connection between the tester and the piece to be tested. Hold the tester so that your thumb is near the test button and your fingers are in contact with the metalert grounding plate on the back of the unit. Press down the test button until the yellow test light comes on. Press the gold sensing tip onto the center of the table facet of the stone to be tested.
VALID TEST FOR NATURAL DIAMOND
IF THE YELLOW LIGHT IS ON WITH NO RED SYNTHETIC
LIGHT AND NO PROLONGED BUZZER ALERT (2 to 3 seconds minimum) THEN THE STONE
DOES NOT DISPLAY THE ELECTRONIC PROPERTIES OF SYNTHETIC MOISSANITE OR SYNTHETIC
COLORLESS AND NEAR COLORLESS DIAMOND. This is a valid test for natural
diamond IF a previous thermal test was positive for diamond.
SYNTHETIC MOISSANITE OR SYNTHETIC DIAMOND
IF THE RED AND YELLOW LIGHT ARE ON AT THE SAME
TIME, AND A CONTINUOUS BUZZER ALERT (2-3 SECONDS MINIMUM) ARE PRESENT:
The stone exhibits the electronic properties of synthetic Moissanite and
synthetic colorless and near colorless diamond.
IF THE RED LIGHT COMES ON WITH A CONTINUOUS
BUZZER ALERT BUT NO YELLOW LIGHT: Look to see if you are touching
metal. Be careful not to come in contact with the setting.
CAUTION! This tester is a professional electronic instrument designed for indoor use only. Do not open this case at any time. Opening the case will void the warranty. As with any electrically powered instrument, opening the case while the adapter is plugged in may result in shock and injury. If you have a problem with the functionality of this tester, call our service line at 1-888-436-7012. This unit contains no serviceable parts.
Be sure to complete your warranty card and return it within thirty days of your purchase.
Warranty and Disclaimer:
Gemnostic Corp. warrants that this Moissketeer 2000-SD will be free from defects in material and workmanship for as long as you own it. This warranty extends only to the original purchaser of this instrument and does not include the probe tip, ground strap or wall mount adapter, which are warrantied for two years.
In the event of a defect in materials or workmanship discovered during the warranty period, Gemnostic Corp. should be notified in writing and the purchaser should return the instrument to Gemnostic Corp.. freight pre-paid, properly identified, and with proof of purchase date. The sole obligation of Gemnostic Corp. , after reasonable time for inspection, will be to repair or replace at its option, and at no charge to the purchaser of the unit, or any part of the instrument that is proven to the satisfaction of Gemnostic Corp. to have been defective at the time of purchase, or that has become defective in normal use during the warranty period. The above warranty is void if the instrument has been opened o serviced by anyone other than Gemnostic Corp., or has been altered, abused, misused, or utilized for purposes other than for which it was designed.
Gemnostic Corp. makes no warranties regarding The Moissketeer 2000-SD other than those expressly contained herein, and all other warranties of any kind whatsoever, whether expressed or implied, including warranties or merchantability or fitness for a particular for a particular purpose, are hereby disclaimed and excluded by it.
250 Commercial St. #3022
Manchester, NH 03101 USA
Other Test Methods For SiC
Testing for Silicon Carbide MUST follow a strict sequence, as each test is designed to eliminate specific possibilities. WE ARE DEALING SPECIFICALLY WITH NEAR COLORLESS SAMPLES BEFORE WE START TESTING.
1) REGARDLESS OF THE TESTER EMPLOYED, all tests for synthetic moissanite MUST BE PRECEEDED by a standard THERMAL test classically used for differentiation between diamond and other diamond simulants before C3’s introduction of synthetic gem quality Silicon Carbide (Moissanite).
1a) Once it has been determined that the sample has similar THERMAL characteristics to diamond, falling in the category which includes ALL FORMS OF DIAMOND AND MOISSANITE (SILICON CARBIDE), we then can use electrical conductivity to differentiate . It would be well to advise that the similarity and variance in the THERMAL CONDUCTIVITY of specific diamond and or silicon carbide samples NOT DEEMED a reliable test to differentiate between the two species, as the thermal properties of diamond and silicon carbide CAN OVERLAP, and moreover THERMAL testing can be influenced by ambient thermal conditions (IS THE SAMLE COLD or HOT) and gemstone size and mounting .
There are presently four types of moissanite detectors on the market, each looking at a different property of the material.
A) Pure THERMAL detectors, such as that produced by Tri-Electronics which ATTEMPT to differentiate between diamond and silicon carbide based on THERMAL CONDUCTIVITY. It has be reported that because of the overlap of thermal properties between Silicon Carbide and Diamond, that this may be an unreliable test, and MOST tester manufacturers have disconted this method as unreliable.
B) OPTICAL testers, the only one currently on the market being the C3 590 MOISSANITE detector can differentiate between Moissanite and Diamond based on the absorption of specific wavelengths in the ultra violet range, supposedly relying on differences in the optical absorption between diamond and moissanite in the 325nm range. This detector is subject to significant user induced error, especially on smaller stones, as the probe tip MUST BE COMPLETELY covered by the stone’s table and the probe tip MUST BE PERPENDICULAR to the table, otherwise a false indication of diamond may occur due to direct reflections of the source illumination off of the crown facets. With proper user care, and with a LIMITATION on stone size (under 10pts size may give unreliable results unless EXTREME CARE is exercised in its’ use. ) If preceeded by a THERMAL TEST, this detector can FURTHER separate between DIAMOND AND SYNTHETIC DIAMOND versus MOISSANITE, with appropriate constraints.
C) Electrical breakdown voltage testers, such as the original Moissketeer, the Ceres Secure and the Terminator or their variants, rely on sensing an avalance of current flow when sufficient voltage is applied. The GIA Gems & Gemology article on synthetic moissanite used a 1970’s vintage GIA GEM instruments tester which applied only 115 volts (US line voltage) across the stone. It was soon recognized by the author, much to the chagrine of GIA, that this was not an applicable test for electrical conductivity, as even the patent literature indicated breakdown voltages for silicon carbide exceeding 1000 volts. Cree Research, the producer of Moissanite for C3, has recently marketed silicon carbide material used in diodes having breakdown voltages exceeding 5000 volts. (A more common diode with a breakdown voltage of 1200volts, is used in the MOISSKETEER CHALLANGE described below.) SOME of these breakdown voltage testers, LIMITED by natural arcing constaints in air, typically 1500 to 1800 volts, were initially reliable given the then current impurity (dopent) levels in material released by C3 an Cree. Given that higher purity material released by Cree to the semi conductor industry has resulted in 5000 volt breakdown voltage diodes, the future of breakdown voltage based testers appears limited. It is also unclear what the ultimate breakdown voltage and conductivity of near colorless synthetic type IIA will be as Bornon levels are reduced
D) Reflectance testers on the market, such
as Hanneman’s Jeweler’s Eye, the out of production Jemmeter, and
a hand held device (name unknown) rely on a perfect polish on the test
specimen to separate moissanite and diamond. Slight scratchs on the
table, the probe not perpendicular to the table, dirt, and even the “micropipe”
inclusions characteristic of synthetic moissanite can result in the indicated
reflectivity being reduced to the values erroneously indicating diamond.
Mounted goods as in a tennis bracelet, may not be able to be tested as
the probes on these units must be flush with the test specimen, and prong
work may interfere with this. C3
announced on March 16th in a National Jeweler Internet article that they
have found a process to permanently alter the RI (surface reflectivity)
of SiC to that of diamond. Indications are that this process could be done
by scam artists. See http://www.national-jeweler.com/ne23/news/31699a.shtml
E)The last category of testers is the electrical leakage detector, namely the MOISKETEER 2000SD. This detector, operating with a patent pending technology sensing current flow in the 10^-9 and below amperage range, is in a class by itself when it comes to electrical conductivity testers. Its’ technology is going to revolutionize the semiconductor industry in affording them the measurement of leakage currents at low levels NEVER BEFORE attainable. LICENSING AGREEMENTS to the semiconductor industry are currently underway. The MOISSKETEER 2000SD doesn’t have to wait for the (electrical) dam to break, it can detect the leak in the dike. Its’ technology and sensitivity is analogous to having to wait for a bomb to go off before you realize whats going on, versus listening (with the MOISKETEER 2000SD) to a faint heart murmer. The MOISKETEER 200SD diferentiates (when preceeded by a THERMAL TEST) between MOISSANITE AND SYNTHETIC near colorless TYPE IIa DIAMOND and Type IIB versus NATURAL TYPE IA , TYPE IB, and TYPE IIA diamond.
The MOISKETEER CHALLANGE .. Can any other detector
sense the leakage across a string of thirty or more 1200 volt breakdown
voltage silicon carbide diodes in a series????? THATS 48,000 VOLTS
folks!!, and we haven’t even really tried to trim the MOISKETEER’s patent
pending technology and sensitivity to its technological limit. We
stopped at 120,000 volts. ALL OTHER ELECTRICAL TESTERS ON THE MARKET HAVEN’T
GOTTEN PAST TESTING THE SECOND DIODE (2400 Volts). Gem quality Silicon
Carbide (MOISSANITE) is being perfected on a daily basis. The Moissketeer
2000SD can meet this challange TODAY.