4.59ct Lightning Ridge Australian Semi-Black Opal | #E268 Birthstone - Loose not dyed Mohs Hardness 5

not dyed Mohs Hardness 5 to 6 SKU Number #820

era: 1940's

combined pair weight: 1

The Center Stones: Natural Crystal Fire Opal

ring weight: 13

4.59ct Lightning Ridge Australian Semi-Black Opal | #E268 Birthstone - Loose not dyed Mohs Hardness 5Rectangular Cabochon Lightning Ridge Opal Weight (carats) 4. 59 carats Origin Lightning Ridge, NSW, Australia Shape Rectangular Cabochon Dimensions (millimeters) 17. 77mm x 9. 26mm x 4. 39mm thick Dimensions (inches) 0. 50" x 0. 36" x 0. 17" thick Body Tone (+N1 to N9 ) N6 Brightness ( 1 to 5+) B5 Predominant Colors green overtones with blue, orange, and yellow undertones Directionality of Fire Highly Directional Treatments Enhancements None Suggested