4mm Round Cabochon Cut Natural Standard White Opal Gemstone
Explore our standard white natural opal gemstones, admired for their vibrant colour flashes, exceptional 4mm round cabochon cut, and premium polish. Our gemstones are calibrated by diameter and sourced exclusively from ethical suppliers within the jewellery trade.
- Authentic natural white opal
- 4mm round cabochon cut
- Lustrous white with dazzling rainbow hues
- High-quality cabochon cut and polish
Please note that the images displayed are meant to represent the cut and general colour range of the gemstones. As natural products, the exact shade and height of each stone may vary. For orders of multiple gemstones, we make every effort to select items that closely match each other in all aspects.
Every gemstone purchase includes a detailed invoice. If you or your client require additional certification or a comprehensive report for an individual gemstone, please consult a reputable and independent laboratory of your choice.
About Opal Gemstones
Precious opals are cherished for their striking play of colours set against a pale (white opal) or dark (black opal) backdrop. Some white opals exhibit a translucent, milky appearance, which is referred to as opalescence and is distinct from the play of colours.
Opals can undergo various treatments, such as staining and resin impregnation, to enhance their appearance. Additionally, composite stones like doublets and triplets can be crafted from multiple pieces.
Opal Testing Methods
Techniques such as observation, refractometers, UV light, and specific gravity testing can be used to differentiate natural opals from synthetic ones.
Opal Symbolism and Properties
Opal is both an October birthstone and a Libra zodiac gemstone, holding symbolic significance throughout history. Ancient Greeks believed opals endowed the wearer with 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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