Turquoise #15 | Dyed Bisbee Opal Boulder opal is known for

Boulder opal is known for its durability among opal varieties

" is a blue to green mineral colored by a high copper content

The Cut: Oval Cabochon

All zoisite ranks from 6 to 7 on the Mohs hardness scale

The Color: Light Blue

Turquoise #15 | Dyed Bisbee Opal Boulder opal is known forThe Stone: Turquoise dyed stabilized The Weight: 157. 39 carats The Origin: Bisbee, Arizona The Cut: Freeform Cabochon Cut stone measurements: 69. 36mm x 29. 96mm x 12. 54mm About Turquoise: What once was regarded a common byproduct of copper mining is now realized to be a rather scarce gem. Typically found in or near copper mines around the world, turquoise from each locality differs in color, quality, character, and rarity. Certain mines are known