Gem Resources Header
Gem Resources International
Gem Resources
PO Box 62006
Minneapolis, MN 55426

Order Forms: PDF WORD
    You have 0 () gems in your cart. View Cart

News & Specials

November Monthly Specials
Up to 50% off normal prices.
Citrine, Green Amethyst, White Topaz, Blue Topaz, Pink Tourmaline, Iolite & Peridot!

Metal clay heating tests.
Shop Talk Gem Info

Join Our Mailing List

Opal Ethiopian

Natural Ethiopian Crystal Opal

Hardness: 5 - 6.5
Specific Gravity: 2.15
Refraction Index: 1.45
Species: Silica Gel
Treatment: None
Care: Never clean ultrasonically, hot water or steam clean.

Opal is one of the October birthstones.  The name opal comes from the Greek Opallos, meaning "to see a change of color."  It is a formation of non-crystalline silica gel that seeped into crevices in the sedimentary strata. Through time and nature's heating the gel hardened into the form of opals.  Beliefs associated the powers of foresight and prophecy, hope and purity.  

Oval Cabochons

8 x 6 mm $32.00 each 2 pieces $54.00
8 x 6 mm High Grade $100.00 each 2 pieces $165.00
11 x 9 mm High Grade $400.00 each 2 pieces $650.00

Designed by
 Copyright © GRI
Home | Show Info | Classes | About Us | Gem Info | Policies | Contact Us