28.05ct Koroit Boulder Opal Stone Tiger's Eye center measurements: 7

center measurements: 7

and it is indistinguishable from non-treated material without an independent lab report

Ametrine makes great rings and is easy to clean with soap and water at home

combined total earring weight: 10

08ct total estimated weight

28.05ct Koroit Boulder Opal Stone Tiger's Eye center measurements: 7Koroit Boulder Opal: Weight (carats) 28. 05 carats Dimensions (millimeters) 50. 8 x 15. 23 x 5. 26mm Origin Koroit Mining District, Queensland, Australia Shape freeform cabochon cut Colors green, blue, purple Brightness of Color Play ( 1 to 5+) 2. 5 Darkness of Body (+1 to 5 ) N A Treatments Enhancements none, natural Additional Notes: Pink mark on back is to indicate in store pricing and will be removed after purchase.