• At GIA’s Knowledge Webinar “Navratna” organised on May 21, 2020, members of the gem and jewellery trade across India gained about the nine gems that represent the celestial bodies of Indian astrology: Sun (ruby), Moon (pearl), Mercury (emerald), Mars (coral), Jupiter (yellow sapphire or topaz), Venus (diamond), Saturn (blue sapphire), and the rising (zircon or hessonite) and descending (cat’s-eye) nodes of the moon.

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