4.25mm Round Cabochon Cut Natural Standard White Opal Gemstone | Jewellery Trade Resources

Sale price£3.70


4.25mm Round Cabochon Cut Natural Standard White Opal Gemstone

Discover our selection of standard white natural opal gemstones, featuring a 4.25mm round cabochon cut and a brilliant polish. We are dedicated to sourcing our gemstones, calibrated by diameter, solely from ethical suppliers in the jewellery trade.

  • Authentic natural white opal
  • 4.25mm round cabochon cut
  • Stunning white with shimmering rainbow colours
  • Excellent cabochon cut and polish

Keep in mind that the images provided serve as a reference for the cut and general colour range. As gemstones are natural products, their exact shade and height may vary. When ordering multiple gemstones, we make every effort to select the most closely matched items in all aspects.

Each gemstone purchase includes a detailed invoice. If you or your client need additional certification or a comprehensive report for an individual gemstone, you can obtain one from an independent laboratory of your choice.

About Opal Gemstones

Precious opals are admired for their vibrant play of colours on either a pale (white opal) or dark (black opal) background. Some white opals display a translucent milky appearance, which is referred to as opalescence and is distinct from the play of colours.

Opal Treatments

Opals can undergo a variety of treatments, such as staining and resin impregnation, to enhance their appearance. Composite stones, like doublets and triplets, can also be created from multiple pieces.

Opal Testing Techniques

Methods such as observation, refractometers, UV light, and specific gravity testing can be employed to distinguish natural opals from synthetic ones.

Opal Symbolism and Properties

Opal, an October birthstone and a Libra zodiac gemstone, has a rich history of symbolism. Ancient Greeks believed opals granted foresight and prophecy, while Romans associated them with purity and hope. With a hardness of 6, opals are among the softer and more delicate gemstones available.

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