16.23ct Rubellite Tourmaline, Oval Cut Loose Opal closed-back design

closed-back design

The term "Cantera opal" refers to fire opal from Mexico that has been cut to contain pieces of the natural host rock the opal was originally formed in

top of ring width: 36

83 carats Weight (grams) 6

52 carats

16.23ct Rubellite Tourmaline, Oval Cut Loose Opal closed-back designDeep Red Rubellite Tourmaline Stone Stone Variety Rubellite, natural Stone Group Tourmaline Weight (carats) 16. 23cts Weight (grams) 3. 25g Dimensions (millimeters) 18. 70mm x 16. 93mm x 7. 54mm Dimensions (inches) 0. 75" x 0. 66" x 0. 3" Origin likely Brazil Shape faceted oval cut Material Grade B+ Colors dark purple red Treatments Enhancements none Mohs Hardness 7 to 7. 5 SKU Number #1051 Additional Notes Round circles seen in the photos and video