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Determines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original colour through the use of incandescent light.
Read MoreLearn about fancy colour diamond's durability and how to care for your fancy-coloured diamond jewellery.
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These tips will help you make sure your diamond shines its best for any occasion.
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Find out more about what causes a diamond to chip, and 8 tips on how you can avoid chipping your diamond.
Read MoreLearn about alexandrite's durability and how to care for your alexandrite jewellery.
Read MoreLearn about ruby's durability and how to care for your ruby jewellery.
Read MoreLearn about garnet's durability and how to care for your garnet jewellery.
Read MoreA treatise on the design, display, care and repair of fine gemstones.
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Learn about kunzite's durability and how to care for your kunzite jewellery.
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