Home > Products > Gem Refractometer > Aluminum alloy with gaiding sand working table FABLE Gem Refractometer FGR-003 with two power supply systems
Aluminum alloy with gaiding sand working table FABLE Gem Refractometer FGR-003 with two power supply systems
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Product Details
| Place of Origin | Guangdong, China | Brand Name | Fable | |
| Model Number | FGR-003 | Size | 222*182*80 mm | |
| Weight | 1 KG | Measurement Accuracy | 0.003 | |
| Min. Div. | 0.001 | Measurement Range | 1.35-1.85 |
Product Description
Aluminum alloy with gaiding sand working table FABLE Gem
Refractometer FGR-003 with two power supply systems
Jewelry Refractometer measures the refractive index of your gems. Besides the RI, a refractometer will also give you the birefringence and optic sign. When possible, it is easier to obtain the optic sign from a polariscope. However, that can’t always be done, so you need the refractometer as an alternate means to determine the optic sign when necessary.
As the refractive index of the gemstones are fixed, the RI value becomes a very important reference data; naturally, a Gem Refractometer is absolutely essential for gem identification.
Details:
Material | Aluminum alloy table |
Testing Range | 1.35-1.85 |
Accuracy | <=±0.003 |
Light Source | Built-in Monochrome LED light |
Power | Batteries/ DC 3V |
Refractive Index Liquid | 1.785±0.005 |
Scale Division | 0.01 RI |
Filter | Polarizing Filter |
Packaging | Metal Box |
The following index of the gemstone for your reference:
| name | R.I. | birefringence | name | R.I. | birefringence |
| Opal | 1.42-1.45 | Apatite | 1.634-1.638 | 0.004 | |
| Fluorite | 1.45 | Peridot | 1.654-1.695 | 0.035 | |
| Glass | 1.51-1.82 | Jadeite | 1.66± | ||
| Sodalite | 1.483-1.487 | Diopside | 1.675-1.701 | 0.026 | |
| Lapis lazuli | 1.50 or 1.67 | Syn.spinel | 1.728± | ||
| Moonstone | 1.52-1.54 | Chrysoberyl | 1.746-1.755 | 0.01 | |
| Chalcedony | 1.53-1.54 | Hydrogrossular | 1.730-1.740 | ||
| Lolite | 1.544-1.553 | 0.01 | rundum | 1.762-1.770 | 0.008 |
| Crystal | 1.544-1.553 | 0.009 | Almandite | 1.79±0.03 | |
| Beryl | 1.56-1.59 | 0.008 | Ruby&Sapphire | 1.762-1.770 | 0.008 |
| Turquoise | 1.61-1.65 | Zircon | 1.925-1.984 | 0.059 | |
| Nephrite | 1.61± | CZ | 2.08-2.20 | ||
| Topaz | 1.61-1.640 | 0.009 | Strontium titanate | 2.409 | |
| Tourmaline | 1.620-1.644 | 0.02 | Diamond | 2.417 | |
| Anslusite | 1.634-1.643 | 0.01 | Spinel | 1.718-1.785 | |
| Obsidian | 1.50± |
Contact Us
- Shenzhen Fable Jewellery Technology Co., Ltd.
- Contact nameCelina K Chat Now
- Phone86-755-89583846-809
- AddressPinghu, Shenzhen, Guangdong
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