Please examine the photos of this Ebay description listing page. Please review the gold engagement ring, and see how the letters of the fine print shows clear read-through effect, THIS IS NOT DIAMOND! Examine the white gold pendant in the above photos, notice how the read-through effect is faint, this is because of the size of the stone is much smaller, but again, THIS IS NOT DIAMOND! Stones that display read-through effect on fine print are NOT DIAMOND! It is best to test with Round brilliants and ovals and some fancy cut stones.

Refractive Index reading for Rutile R.I. 2.61-2.91 Displays NO READ-THROUGH

Refractive Index reading for Moissanite R.I. 2.65-2.69 Displays NO READ-THROUGH

Refractive Index reading for Diamond R.I. 2.42 Displays NO READ-THROUGH

Refractive Index reading for Strontium Titanate R.I. 2.39 NO READ-THROUGH

Refractive Index reading for Cubic Zirconia R.I. 2.15-2.25 Slight Read-Through

Refractive Index reading for Gadolinium Gallium Garnet R.I. 1.97 Slightly Good Read-through

Refractive Index reading for White Zircon R.I. 1.93-1.98 Slightly Good Read-Through

Refractive Index reading for Yttrium Aluminum Garnet R.I. 1.83 Good Read-through

Refractive Index reading for White Sapphire R.I. 1-76-1.78 Very Good READ-THROUGH

Refractive Index reading for Spinel R.I. 1.72 CLEAR READ-THROUGH

Refractive Index reading for White Topaz R.I. 1.61-1.64 VERY CLEAR READ-THROUGH

Refractive Index reading for Faceted Glass R.I. 1.52 Extremely CLEAR READ-THROUGH

* You will see from the above Refractive Index listings that three simulants display high Refractive indices and DO NOT show read-through effect. These are all easily separated because of HIGH DISPERSION OR DOUBLE REFRACTION characteristics that they  display! Strontium Titanate is the only simulant with similar Refractive Index readings as Diamond that is Singly Refractive.

* Testing tip for Cubic Zirconia, Faceted Glass, White Sapphire, White Topaz, Colorless Zircon. All of these above stones have lower refractive indices as Diamond. These stones will all show the read through-effect, some greater than others. Zircon and Cubic Zirconia may require the loupe to distinguish read-through effect. These all can be easily separated by using a small fine print and seeing if you could make out the letters. *Only works best on round brilliants, and some types of oval and fancy cuts. Please reference image provided in the above Ebay photos of this listing to understand the read-through effect. Other natural Stones not provided! Only for demonstration purposes only! All simulant and natural stones in this Ebay listing taken are examined using a millimeter gauge under 8x magnification (NOT PROVIDED ONLY FOR DEMONSTRATION PURPOSES. You will only receive (1) 6.5mm Round brilliant Cubic Zirconia specimen stone. 

Please continue reading down below of how to perform various tests.

* This kit will  include (1) 6.5mm round brilliant Cubic Zirconia AAA grade VVS D color 1 carat Diamond equivalent simulant specimen stone. You can use this to study facet rounding with your 10x loupe magnifier included in this kit. This specimen is good to use in distinguishing the poor thermal conductivity properties of Cubic Zirconia (FOG TEST). Use this specimen stone as a gauge for the RS MIZAR DiamondNITE Dual Diamond and Moissanite Tester by Oris Nelson Model  provided in this kit! Test the loose stone in the aluminum testing tray provided in this kit. Testing the Specimen Cubic Zirconia stone with the DiamondNITE tester will show NO results.

Understand the density of certain gemstones to accurately calculate the estimated total carat weight of your jewelry! Use the PuriTEST Specific Gravity sheet provided in this kit to accurately calculate gemstone estimated weight! Your Cubic Zirconia specimen test stone will gauge as 6.5mm according to the Gemstone estimated Diamond gauge and will show as 1 carat. Remember this gauge only references the known density of (Diamond 3.52 Specific Gravity)! Cubic Zirconia is roughly 1.6-1.8 times as dense as Diamond. Cubic Zirconia has a density from 5.6-6.15 Specific Gravity, depending solely on the stabilizers that are used in the proprietary formulation of CZ! Example 6.5mm round Cubic Zirconia specimen stone should weigh approximately 1.7-1.8 carats.

Also you can understand the Visual Optic spectrum that Cubic Zirconia displays. Cubic Zirconia displays slightly different visual spectrums and has more dispersion and scintillation than Diamond! I will also include a random fortune cookie fortune along with this kit so you can better understand the Refractive Index of Cubic Zirconia. (Examine the photo above of a White Topaz displaying the numbers of the fortune cookies fortune). White Topaz has a Refractive Index reading of 1.6-1.64 approximately. Cubic Zirconia will show a slight read-through effect (Cubic Zirconia has a refractive index of 2.2-2.25).

Please review Ebay photos if performing the Visual Optic test. This test will not require the loupe. This will only require your eyes and a light source.

Visual Optics

 This method costs nothing, and only uses your eyes and a light source. Light source could be a pen light, an old incandescent light bulb, or even the moon light shining in through your window.

How to test: If testing in set jewelry make sure to place stone as close to your eyeball without touching your eyeball! If you wear contacts, then you are ahead of the game! Place stone close to eye and peer through stone to light source.

Using Visual Optics on Diamonds you will see what appears as a night sky of small sharp stars scattered through out. I.D. of Diamond.

Using Visual Optics on Silicon Carbide "Moissanite" you will see what appears as a blizzard of wonderful colored snowflakes. I.D. of Silicon Carbide "Moissanite".

 Viewing the above photos of this listing will show you the effects of read-through of Glass,Cubic Zirconia, White Topaz, and White Sapphire. Please view the photos above, this will show in the photos of this Ebay listing. Cubic Zirconia also is a poor thermal conductor, the Diamond Tester provided will show NO READING while testing Cubic Zirconia. If you breathe on your test Cubic Zirconia specimen it will fog for more than three seconds. If performing this test please make sure the stone is free from all oils, dirt and grime. Wipe with a soft microfiber cloth provided in this testing kit, or dry paper towel.

*Performing tests with the RS MIZAR DiamondNITE DN-1 Dual Diamond and Moissanite Tester by Oris Nelson

When turning unit on please allow 5-9 seconds for the unit to heat up before beginning any testing. The LED Wait/Battery light will remain on for 5-7 seconds, and then blink sporadically and beep for 1-2 seconds. Once RED LED extinguishes the Yellow Ready LED light emits and you are now ready to begin further testing on stones.

The Cubic Zirconia 6.5mm Round brilliant specimen stone provided will give you a valuable indication of performing the visual optics test. Cubic Zirconia performs very similar spectrum patterns as diamond, the main reason of the popularity of Cubic Zirconia in the marketplace today! Moissanite on the other hand displays great amounts of dispersion and scintillation! Moissanite is compared to as a Disco Ball effect. In the Ebay image provided of this listing, you can better understand what I am talking about if you take a look. Comparing your test specimen Cubic Zirconia to moissanite you will see very clearly that the stone is definitely off! Moissanite is just too sparkly!

The information provided in this description page is very vital information to perform various tests, and have the most accurate results! It should be read and completely understood. Please continue reading down below for more important vital information.

Diamond Gauge Sizer Estimator Mounting gem carat Tester kit Size Measuring Gemstones   

GENUINE PURITEST - PRECISE ACCURATE Carat Sizing Tool!

These Diamond Carat Gauges are extremely thin 0.03 millimeter in thickness. These Diamond Carat Gauges are extremely lightweight weighing 0.75-0.80 grams. These carat gauges are the cheapest option, when other means are not available! These transparent Carat Gauges are perfect when in the “field” at yard sales/estate sales! Perfect to use when wanting to know the carat weight of set semi-precious stones or re-selling jewelry on Ebay! With the information down below of this listing, you can understand how to calculate carat weight of any gemstone with the formulas given in this ebay description!

• This is a new gemstone weight gauge
• The diamond weight estimator is perfect for estimating the size of loose or mounted stones when other methods are unavailable
• This estimator works for emerald, marquise, pear shaped, round and baguette stones as well as brilliant full cuts
• Simply lay the gem estimator on your stone pad and place the diamond in question on the appropriate outline, and you will be able to instantly tell the approximate weight of your stone

Measurements of this Carat Gauge Estimator: 9 inches length x 4 inches width x thickness 0.03 MM (1mil-1.5mil). Ultrathin and lightweight for convenience! This gauge is only 1/33 of a millimeter in thickness!These Diamond gauges are Super lightweight weighing 0.75-0.80 grams. These are extremely flexible making it easier to gauge on mounted settings with Diamond melee accented stones. The thicker gauges are more difficult to maneuver around the shanks of rings. With these you can easily wrap the gauge around a ring making it easy to use the gauge for small 1.5-2.5 mm Diamonds! With one hand using the gauge wrapped around the ring and the other hand using a jewelers loupe to get the most accurate estimate!

• Gemstone weight estimation SPECIFIC GRAVITY SHEET.
• Lists the SPECIFIC GRAVITY OF 12 OF THE MOST COMMON JEWELRY GEMSTONES!
• SPECIFIC GRAVITY COMPARISONS FROM 0.03 CARAT TO 3.00 CARATS!
• This is the must have tool for the Pawnshop owner, Gold & Silver Buyer or Estate sale/Yard sale picker!

For those that already own a Digital Caliper accurate to 0.01 millimeter I will be providing Diamond Carat Weight Calculator Formula below:

*This formula can also be applied to semi-precious gemstones, all one needs to know is "Specific Gravity" provided with this Diamond Carat Gauge!

*Calculating Diamond carat weight by diamond carat weight formula

For Round Brilliant faceted stones:

The Formula is Diameter squared x Depth x Specific Gravity x 0.0018= Carat Weight

For Oval faceted stones:

The Formula is Length x Width x Depth x Specific Gravity x 0.0020= Carat Weight

For Emerald cut faceted stones:

The Formula is Length x Width x Depth x Specific Gravity x 0.0025= Carat Weight

For Rectangular faceted stones:

The Formula is Length x Width x Depth x Specific Gravity x 0.0026= Carat Weight

For Square cut faceted stones:

The Formula is Length x Width x Depth x Specific Gravity x 0.0023= Carat Weight

For Marquise cut faceted stones (Navette):

The Formula is Length x Width x Depth x Specific Gravity x 0.0016= Carat Weight

For Pear cut faceted stones:

The Formula is Length x Width x Depth x Specific Gravity x 0.0018= Carat Weight

For Square Cushion faceted stones: (Average corner measurement and belly measurement for diameter) 

The Formula is Diameter Squared x Depth x Specific Gravity x 0.0018= Carat  Weight

For Rectangular Cushion faceted stones: (Average Length and Width for diameter)

The Formula is Diameter Squared x Depth x Specific Gravity x 0.0023= Carat Weight

For Rectangular step cut faceted stones:

The Formula is Length x Width x Depth x Specific Gravity x 0.0025= Carat Weight

For Square step cut faceted stones: (Average both measurements for diameter)

Diameter Squared x Depth x Specific Gravity x 0.0023= Carat Weight

For Cabochon cut faceted stones:

The Formula is Length x Width x Depth x Specific Gravity x 0.0027= Carat Weight

Round Brilliants Diamond Carat Weight and Millimeter Width

0.8mm= 0.002 carat

0.9mm=0.0033 carat

1.0mm=0.005 carat

1.1mm=0.006 carat

1.2mm=0.008 carat

1.3mm= 0.01 carat

1.4mm=0.012 carat

1.5mm=0.014 carat

1.6mm=0.016 carat

1.7mm=0.02 carat

1.8mm=0.025 carat

1.9mm=0.028 carat

2.0mm=0.032 carat

2.1mm=0.035 carat

2.2mm= 0.04 carat

2.3mm=0.046 carat

2.4mm=0.052 carat

2.5mm=0.06 carat

2.6mm=0.068 carat

2.7mm=0.075 carat

2.8mm=0.085 carat

2.9mm=0.094 carat

3.0mm=0.10 carat

3.1mm=0.115 carat

3.2mm=0.125 carat

3.3mm=0.138 carat

3.4mm=0.15 carat

3.5mm=0.164 carat

3.6mm=0.178 carat

3.7mm=0.194 carat

3.8mm=0.21 carat

3.9mm=0.225 carat

4.0mm=0.245 carat

4.1mm=0.26 carat

4.2mm=0.282 carat

4.3mm=0.304 carat

4.4mm=0.326 carat

4.5mm=0.348 carat

4.6mm=0.37 carat

4.7mm=0.396 carat

4.8mm=0.422 carat

4.9mm=0.448 carat

5.0mm=0.476 carat

5.1mm=0.506 carat

 PuriTest TM 10X Jewelers Loupe Magnifier 10x 21mm NEW IN CASE

• This is the most valuable tool for the Pawn Shop owner, Gold & Silver Buyer, Estate/yard sale picker! Coin collector's tool,Gemstone buyer, Baseball card collector! So many uses for this 10x Jewelers loupe magnifier!
• Examine the Diamond's symmetry and polish
• Read the inscription serial number on a Diamonds Girdle with this 10x loupe magnifier!
• Use this 10x loupe magnifier to test for Moissanite!
• Use the 10x loupe magnifier to test for Moissanite's Double Refraction characteristics!
• The more you buy the more you save many loupes available!
• *Instructions for testing for *Moissanite* using a 10x loupe magnifier. Diamonds are graded by laboratories using a standard 10x loupe. With using 10x loupe magnifier you are using the same magnification of a professional diamond grader. This allows you to view the crown bezel facets with the stone in question at an angle and look through into the culet.  Angle of tilt (C-AXIS) and observe the culet through the crown facets. Again, the doubling effect shows up and this should confirm your suspicion.

* Please reference my photos of my listings.

This allows me to actually show you what to look for!

In the images provided above in the listing photos you can see what angle you need to tilt the stone in question to determine double refractive properties. This takes some time to master but once you master this technique it takes literally seconds to make the determination.

Loupe comes in Cardboard PuriTest box and a case for carrying and protection!

*PLEASE READ DOWN BELOW OF THE MULTIPLE USES THAT THE LONGWAVE 395NM UV LIGHT CAN BE USED FOR. The new Synthetic Moissanite being produced is extremely low in electrical conductivity using the UV light along with tests is required if wanting accurate results! Please READ BELOW FOR other uses of the UV light.