Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α- Al 2 O 3) with trace amounts of elements such as iron, titanium, cobalt, lead, …

Some stones exhibit the phenomenon known as color change, most often going from blue in daylight or fluorescent lighting to purple under incandescent light. Sapphires can even be gray, …

Sapphire is a precious gemstone comprised of the mineral corundum and trace elements like iron, titanium, cobalt, boron, or silicon. In this guide, you’ll learn everything you need to know about …

Mar 5, 2025 · Sapphires are super cool rocks that come in many colors and forms, known as the different types of sapphire. Blue sapphire, padparadscha sapphire, and Montana sapphire are …

Dec 4, 2025 · What is a Sapphire Gemstone? A sapphire is a precious gemstone belonging to the corundum mineral family, known for its incredible durability, brilliance, and vibrant colors.

Feb 5, 2021 · Sapphires are historical gems with various colors, lore, and prices. This guide covers all of sapphire’s colors, history, meanings, grading factors, and prices.

Jul 10, 2025 · Everything you ever wanted to know about sapphire. Find value guidelines, scientific data, expert comments, and more in our Gem Listings.

Sapphire forms from corundum - aluminum and oxygen - under immense pressure and heat deep in Earth for millions years. Liquid seeps into rock cracks, cools into crystals, usually colorless.

Sapphires have been worn by royalty for centuries and have been said to carry mystic powers. Click through for a closer look at the rich-colored gemstones.

Sapphire, transparent to translucent, natural or synthetic variety of corundum (q.v.; aluminum oxide, Al2O3) that has been highly prized as a gemstone since about 800 bc.