5mm Round Cabochon Cut Natural Standard White Opal Gemstone
Explore our collection of standard white natural opal gemstones, cherished for their brilliant colour flashes, exceptional 5mm round cabochon cut, and fine polish. We guarantee our gemstones are ethically sourced and carefully calibrated by diameter for the jewellery trade.
- Authentic natural white opal
- 5mm round cabochon cut
- Vibrant white with sparkling rainbow hues
- Expert cabochon cut and polish
Please note that the images displayed serve as a representation of the gemstone's cut and colour spectrum. As each gemstone is a natural product, its exact shade and height may vary. When ordering multiple gemstones, we strive to select items that closely match in all aspects.
Each gemstone purchase includes a detailed invoice. If you or your client needs additional certification or a comprehensive report for an individual gemstone, please contact a reputable and independent laboratory of your choice.
Opal Gemstones Overview
Precious opals are celebrated for their remarkable play of colours against a pale (white opal) or dark (black opal) backdrop. Some white opals exhibit a translucent, milky appearance, known as opalescence, which is distinct from their play of colours.
Various treatments can be applied to opals, such as staining and resin impregnation, to enhance their appearance. In addition, composite stones like doublets and triplets can be crafted from multiple pieces.
Techniques for Testing Opals
Differentiating natural opals from synthetic ones can be achieved through methods like observation, refractometers, UV light, and specific gravity testing.
Opal Symbolism and Properties
Opal is both a birthstone for October and a zodiac gemstone for Libra, holding historical and symbolic importance. The ancient Greeks believed that opals provided foresight and prophecy, while Romans considered opals to be symbols of purity and hope. With a hardness of 6, opals are among the softer and more delicate gemstones available.
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