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, chromium, vanadium, magnesium, boron, and silicon.

2023年9月3日 · Sapphire is one of the most popular gemstones for jewelry of any kind. Sapphire's hardness is second only to diamond among natural gems. It also has no cleavage planes. These qualities make it a superb jewelry stone for everyday wear, with great resistance to …

2025年3月5日 · 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 just a few examples showing how awesome they can be. Each type of sapphire has its own special color and story.

Learn the ins and outs of sapphires, from mineral composition to origin, color, meaning, and more. What Is a Sapphire? Sapphire is a precious gemstone comprised of the mineral corundum and trace elements like iron, titanium, cobalt, boron, or silicon.

Blue sapphires range in size, and large blue sapphires are more readily available than large rubies. Explore sources, gemological research, and the role of gems in history. Gemological Characterization of Sapphires from Yogo Gulch, Montana. The …

2025年2月24日 · 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. Its colour is due mainly to the presence of small amounts of iron and titanium and normally ranges from a very pale blue to deep

Sapphire is one of the big three of colored gemstones (the other two are ruby and emerald). This durable gemstone captures jewelry buyers with its practicality and aura of romance. Click here and learn about the factors that make sapphire so desirable!