Pink ChalcedonyA pink chalcedony ... There are a number of semiprecious gems, many quite beautiful, but diamonds, rubies, sapphires, and emeralds continue to qualify as "precious." ...

Like their gemstone cousin the sapphire, rubies are just a variety of corundum, or aluminum oxide. Where sapphire gets its blue tint mainly from iron, rubies get their pink to blood-red hue from ...

The gorgeous gem is surrounded by a ring of white diamonds ... purple sapphires surrounding a white diamond, two pink sapphires, and a band plated with white gold. Talk about a statement ring.

(PRESS RELEASE) The World Jewellery Confederation (CIBJO), the American Gem Trade Association (AGTA) and the International ...

The brooches feature diamonds, pink tourmaline gems and blue sapphires Two diamond-encrusted Cartier brooches once owned by millionaire socialite Virginia Courtauld are going on display for the ...