Three jewellery industry associations have released a joint statement expressing concern about the presence of irradiated rubies and sapphires in the global market.

Its extraordinary size and vivid pink hue make it one of the rarest and most valuable gems ever unearthed ... in daylight to red in incandescent light. Alexandrite’s rarity and mesmerising ...

September is a radiant sapphire, and October is a light pink tourmaline. November features citrine, a yellow gemstone, and December is a deep blue topaz. As with the Mickey birthstone earrings ...