Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
Sapphires are one of the four precious gems (the other three being emerald, ruby and diamond). Sapphire and its fraternal twin the ruby are both composed of the same material, corundum, the crystalline form of aluminum and oxygen. Sapphires come in virtually every color of the rainbow; when red they are called ruby.
