4.37ct Koroit Boulder Opal | #E204 Goldstone play of color description: full

play of color description: full color spectrum visible

John's Island) in the Red Sea

light reddish overtones with a slight green and blue undertone pinfire color pattern

The matrix (host rock) is rich brown ironstone

Agate jewelry can safely be put into chemical and ultrasonic cleaners

4.37ct Koroit Boulder Opal | #E204 Goldstone play of color description: fullKoroit Boulder Opal Weight (carats) 4. 37cts Origin Koroit Mining District, Queensland, Australia Shape Freeform Dimensions (millimeters) 17. 56mm x 10. 08mm x 3. 81mm Dimensions (inches) 0. 7" x 0. 4" x 0. 2" Body Tone (+N1 to N9 ) NA Boulder Brightness ( 1 to 5+) B3. 5 Predominant Colors Green Blue Directionality of Fire Slightly Directional Treatments Enhancements None Suggested Purpose Pendant Ring Sku Number #E204 Additional Notes None