12.83ct Quilpie Boulder Opal Stone | #27

Australian Boulder Opal: Weight (carats) 12.83cts Dimensions (millimeters) 29.21mm x 17.14mm x 4.79mm Origin Quilpie Mining District, Queensland, Australia Shape polished freeform cut Colors blue, green, violet Brightness of Color Play (-1 to 5+) 2 Darkness of Body (+1 to 5-) N/A Treatments / Enhancements none, natural SKU Number #27 Additional Notes: Thickness of this stone makes it a versatile option for use in rings, pendants, and bracelets.  This stone is from our latest collection of Quilpie boulder opal from Queensland, Australia.  Natural fractures have been left in the stone to intentionally prioritize size and color brightness.