Gemstone Refractometer Refractive Index Chart 127 Gem Stones GIA
www.nisupply.com
Cameras & Optics / Optics

Gemstone Refractometer Refractive Index Chart 127 Gem Stones GIA

$7.99
{{option.name}}: {{selected_options[option.position]}}
{{value_obj.value}}
Store Logo

NISupply

View Store

Item Description: Laminated Gemstone Refractometer - Refractive Index Chart of 127 different Gemstones GEM REFRACTIVE INDEX CHART (8.5" x 11" - 1 Page, 2 Sides)   Name     Structure     Hardness     Specific Gravity     Refractive index     Doubly Refracting (bi-refraction)     Achroite ( Tourmaline )     Trigonal     7.5     3.06     1.62 - 1.64     0.018     Agate ( Chalcedony)     Trigonal     7     2.61     1.53 - 1.54     0.004          125+ Gemstones are labeled! A Gem Refractometer without a Refractive Index Chart is like a thermometer without the reference to what is hot or cold! A copy of this comes with each of our Gem Refractometers, but this listing is for a laminated version that will last a much longer time.     National Industrial Supply 30777 Rancho California #891420Temecula, CA 92589, USASales: 951.308.9269Fax: 310.733.5480  -  E-mail: nisupply@gmail.com  -  Website: www.nisupply.com

Show More Show Less