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"Yowah nuts" are a variety of boulder opal geode found in the Yowah opal fields of Queensland
average diameter: 2mm
heated with iron to achieve lemon color
The Setting: Prong Set Cluster Ring
Apatite colors often mimic those of more valuable stones
3.50ct Blue-Green Sapphire, Oval Cut Sapphire "Yowah nuts" are a varietyNatural Blue Green Sapphire Weight (carats) 3. 50cts Weight (grams) 0. 70g Dimensions (inches) 0. 4" x 0. 3" x 0. 2" Dimensions (millimeters) 9. 92mm x 7. 92mm x 4. 61mm Origin unspecific Shape faceted oval cut Material Grade A Colors blue, green, purple Notable Inclusions color zoning Treatments Enhancements heat Mohs Hardness 9 SKU Number #763
