0.90ct Lightning Ridge Black Semi-Crystal Opal | #E42 Aventurine Often used as an alternate

Often used as an alternate birthstone to topaz for the month of November

Incredibly rare variety of tricolor tourmaline found in Vietnam

maximum depth of pendant: 0

An eye-catching statement from the Mid-century Modern jewelry era

orthorhombic crystal system

0.90ct Lightning Ridge Black Semi-Crystal Opal | #E42 Aventurine Often used as an alternateLightning Ridge Black Semi Crystal Opal Weight (carats) 0. 90cts Origin Lightning Ridge, Australia Shape Freeform Triangle Dimensions (millimeters) 8. 98mm x 7. 18mm x 2. 47mm Dimensions (inches) 0. 33" x 0. 3" x 0. 1" Body Tone (+N1 to N9 ) N2 Semi Crystal Brightness ( 1 to 5+) B1 Predominant Colors Blue Only Directionality of Fire Very Directional Treatments Enhancements None Suggested Purpose Ring Pendant Sku Number #E42 Additional Notes None