Spinel (/ spɪˈnɛl, ˈspɪnəl / [7]) is the magnesium / aluminium member of the larger spinel group of minerals. It has the formula MgAl. 4 in the cubic crystal system. Its name comes from the Latin word …

Spinel belongs to the cubic crystal system and its characteristic crystal shape is an octahedron, which looks like two back-to-back pyramids. Like ruby, spinel is found in alluvial deposits; it ranks 8 on the …

May 29, 2024 · Spinel has often been confused for ruby or sapphire. But this durable gemstone, which is rarer than a diamond, is gaining popularity due to its color, durability, and more affordable price point.

Spinel is an oxide mineral with a composition of MgAl 2 O 4 and an isometric crystal structure. It is often found in octahedral crystals. It has a Mohs hardness of 8, a high tenacity, and a specific gravity …

Spinel, mineral composed of magnesium aluminum oxide (MgAl2O4) or any member of a group of rock-forming minerals, all of which are metal oxides with the general composition AB2O4, in which A may …

Aug 2, 2021 · The spinel gemstone is as beautiful as ruby, but with an intriguing history. Learn how it makes the perfect choice for jewelry, collecting, and more.

Oct 5, 2024 · Known for its vibrant colors, remarkable hardness, and a history that intertwines with some of the most famous gemstones in the world, Spinel has long held a special place in both gemological …