Vintage Gold Coin NecklaceSpecifications:Metal: 18K Yellow GoldMain Stone: Ruby RedMain Stone Weight: 0.6ct, 5.8x4.6mmMain Stone Shape: OvalSide Stones: Round DiamondSide Stone Weight: 1.95ctTotal Weight of piece: 82.14gRubies got their name from the word for Red (rubu). There are a variety of mineral corundum. A crystalline from aluminum oxide. This mineral (ruby) is the hardest mineral after diamonds making it the 2nd hardest gemstone for all practical purposes. Ruby is the traditional Birthstone for July. Known as the King of Gems, the Ruby is perhaps the rarest and most precious of all the colored gemstones. So, you can become King of your household by purchasing a piece of our ruby collection.For more information read our ‘R is for Ruby’ blog FAQs: Q: What metal is this necklace made of?A: It is crafted in 18K yellow gold. Q: What stones are set in the piece?A: An oval ruby (0.6ct, 5.8x4.6mm) accented by 1.95ct of round side diamonds. Q: How should I care for this necklace?A: Clean gently with a soft cloth; warm water and mild soap are safe for gold, ruby, and diamonds.