Spinel - Wikipedia
WebSpinel ( / spɪˈnɛl, ˈspɪnəl / [7]) is the magnesium / aluminium member of the larger spinel group of minerals. It has the formula MgAl. 2O. 4 in the cubic crystal system. Its name comes from the Latin word spinella, a diminutive form of spine, in reference to its pointed crystals. [5] Properties. Cut spinel.
Spinel Value, Price, and Jewelry Information - Gem Society
WebSpinel Value, Price, and Jewelry Information. Although long known best for being misidentified as ruby, spinel is a beautiful gem in its own right. Its colors, durability, and relative affordability make it an excellent jewelry stone. By Joel E. Arem, Ph.D., FGA, Donald Clark, CSM IMG, Barbara Smigel, PhD.
Spinel Gemstone | Spinel Stone - GIA
WebSpinel belongs to the cubic crystal system and its characteristic crystal shape is an octahedron, which looks like two back-to-back pyramids. Perfect for Jewelry Like ruby, spinel is found in alluvial deposits; it ranks 8 on the Mohs scale and has good toughness, making it a durable gem for jewelry.
13 Gemmy Facts About Spinel - The Overlooked Gem - Geology.com
WebThe Most Overlooked Gem? Spinel is a new birthstone with vivid colors that span the spectrum. It has a spectacular luster, excellent durability, and its current price might be at a low that you will never see again. Here are 13 reasons why I believe that spinel is one of the world's most overlooked gems. Table of Contents. The Most Overlooked Gem?
Spinel | Gemstone, Hardness, Structure | Britannica
WebMar 22, 2024 · spinel, mineral composed of magnesium aluminum oxide (MgAl 2 O 4) or any member of a group of rock-forming minerals, all of which are metal oxides with the general composition AB2 O 4, in which A may be magnesium, iron, zinc, manganese, or nickel; B may be aluminum, chromium, or iron; and O is oxygen. The spinel group is …
Spinel Description - GIA
WebThe spinel used in jewelry is a small part of a group of minerals that share the same crystal structure. Not all of them form transparent crystals suitable for jewelry use, however. Spinel offers a range of hues, from orange to intense “stoplight” red, vibrant pink, and all shades of purple, blue, and violet through bluish green.
Spinel: Red and blue gems confused with ruby and sapphire - Geology.com
WebSpinel is a gem that has been confused with ruby and sapphire for over 1000 years. Several of the most spectacular spinels ever discovered were mounted as "crown jewels" and other "jewelry of significance" under the assumption that they were rubies or sapphires. Spinel occurs in the same bright red and blue colors as rubies and sapphires.
Micro-Features of Spinel - GIA
WebAug 15, 2019 · Spinel’s appeal may be due in part to its range of colors, from red to pink, purple, blue, gray, and orange (figures 1 and 2). Figure 2. This remarkable suite of spinel gems faceted by Bill Vance shows a wonderful range of color and transparency. The 232.9 ct rough mineral specimen gives clues to the crystal’s origin, with remnants of the ...
Spinel – The Ultimate Guide – (Meaning, Description, Uses
WebAuthority Jewelry. What is Spinel? Spinel is a mineral, often found in the same places as other corundum varieties such as Ruby and Sapphire. It is often transparent, singly refractive, and measures 8 on the Mohs scale for hardness. It owes its beautiful color to the presence of chromium.
Everything About The Spinel Gem | Spinel Info & Trivia
WebAug 2, 2021 · Spinel is a mineral that owes its beautiful color to chromium, much like rubies and emeralds do. It has a hardness of 8 on the Mohs hardness scale (diamond has a hardness of 10). Spinel is seen in a wide range of colors: red, lavender, violet, blue, green, brown, black. Often, spinel is found in gravel deposits where there is much corundum as …
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