Photos show stones from the current lot. Every stone you receive matches the size and grade you choose.
Calibrated · Loose Gemstone
Natural Ethiopian Opal Round Shape Calibrated Cabochon Available in 2MM-8MM
Sold per stone. Pick a size; the price drops as you add more of the same stone.
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- Round
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Every size at actual size
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About these stones
Natural Ethiopian Opal Round Shape Calibrated Cabochon Available in 2MM-8MM
October’s birthstone, opal, is a magical and almost otherworldly gem. Once thought to include the colors of all precious stones, opals possess uncanny powers for a variety of cultures. Dangled as a hypnotic talisman or powdered into a compound to instill invisibility, opals—in one way or another—have always been bewitching and mysterious.
Birthstone: October Anniversary: 14
How we grade
A: lighter colour, visible inclusions. Good for fashion pieces and practice settings.
AA: even colour, some inclusions you can see up close. Everyday jewelry.
AAA: rich colour, eye clean. Fine jewelry.
AAAA: the top colour we cut, eye clean. Statement and heirloom pieces.
Market Basics or Precision
Market Basics: good outlines; sizes and depths vary a little stone to stone. Best value for settings you adjust by hand.
Precision: even outlines and matched depths. Drops into pre-notched castings and lines up in rows and halos.