Blue gems come in many different varieties and colors, with sapphire being the most classic and highly prized blue gemstone from the mineral corundum. All blue corundums are known as sapphires while corundums of all other colors are called fancy sapphires, and red corundums are known as rubies. Other gemstones with a blue color include tanzanite, zircon, topaz, aquamarine, lapis lazuli, spinel, tourmaline, iolite, apatite, agate, rainbow moonstone, kyanite, fluorite and paraiba tourmaline.Know More
Other varieties of blue gemstones include azurite, which is a soft, opaque gem with a dark blue color. The aquamarine variety of gem comes from the mineral beryl and its name is derived from its resemblance to seawater. Aquamarine is also available in a richer hue of blue, which has a greater desirability.
Black opal is another variety of blue gemstone that has a black base and a blue play-of-color quality. Larimar is a rare blue gem that has a delicate surface, which can fade when exposed to bright light. Larimar is only found in the Dominican Republic and it is specifically prized for its blue color.
Some other blue gemstones are dumortierite, sodalite, hemimorphite, labradorite, which produces blue iridescent flashes, and turquoise, which is so highly acclaimed that its name has become synonymous with the name of a color in English.Learn more about Precious Metals & Gems
According to Jewelry Notes, a black sapphire is a type of sapphire that has a nearly opaque appearance. While the stone itself is blue, it's so dark that it absorbs all light entering it, resulting in the appearance of a solid black stone.Full Answer >
Examine a sapphire under strong light with a jeweler's loupe to look for scratches, bubbles and light reflections that indicate the stone's origins. If in doubt, a certified gemologist can give a definitive answer as to whether or not the stone is genuine.Full Answer >
Sapphire is a very valuable blue gemstone, but it can take on a variety of colors, including white, yellow, pink and green. It is made from a colorless mineral called corundum, but this mineral contains trace elements such as iron and titanium that can turn it blue.Full Answer >
The strong contenders for being the rarest gemstone in the world are taafeite, musgravite and serendibite. According to the Gemological Institute of America, the so-called "rarity" of gemstones is not clearly defined, which means that determining the rarity of gemstones can be subjective.Full Answer >