Item Description: Laminated Gemstone Refractometer - Refractive Index Chart of over 125 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

 

(THIS IS A SAMPLE OF WHAT'S ON IT!)

National Industrial Supply

2767 Maricopa Street, Torrance, CA 90503, USA

Phone # 310.748.6858  -  Fax # 310.833.7306

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.

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For LARGER ORDERS, please check out our eBay Store! <--- click the tag!

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International Clients:

We ship packages via US Postal's Global Priority Mail/Air Mail for $6.00 ($4.00 to Canada). It takes about 3-8 business days arrive (please note that there can be Customs delays from time to time).

Canada: $4.00                 Rest of the World: $6.00

COMBINE ITEMS AND SAVE ON SHIPPING!

Questions? Larger orders? Please e-mail us!

For inquiries about this product, please contact me at the e-mail address below.

National Industrial Supply
2767 Maricopa Street
Torrance, CA 90503, USA
Sales: (310) 748-6858
Fax: (310) 833-7306
E-mail: [email protected]

We prefer Paypal!  We accept Cardit Cards via phone, fax or e-mail too!!

After purchasing, pay instantly with your credit card through PayPal!

Return Items must be returned within 30 days . Refund will be given as Money back. Refund policy details: null Shipping Destination: United States Carrier Method Shipping Cost Per additional Item STANDARD Standard $3.00 $0.50 USPS Priority Mail Express® $20.00 $0.50 Destination: Worldwide Carrier Method Shipping Cost Per additional Item USPS Priority Mail Intl® $6.00 $0.50 Destination: Canada Carrier Method Shipping Cost Per additional Item USPS Priority Mail Intl® $4.00 $0.50 Payment Method Type Instructions to Buyer Paypal null Insurance Not Offered (Domestic)