Determines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original color through the use of incandescent light.
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Long-forgotten opals found after 27 years in storage still looked stable and ready to be worked.
Read MoreLearn about fancy color diamond's durability and how to care for your fancy-colored diamond jewelry.
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Learn more about what causes a diamond to chip, and 8 tips on how you can avoid chipping your diamond.
Read MoreLearn about amber's durability and how to care for your amber jewelry.
Read MoreLearn about alexandrite's durability and how to care for your alexandrite jewelry.
Read MoreLearn about emerald's durability and how to care for your emerald jewelry.
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Learn about sunstone's durability and how to care for your sunstone jewelry.
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Learn about rose quartz's durability and how to care for your rose quartz jewelry.
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Learn about morganite's durability and how to care for your morganite jewelry.
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