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详细了解必应搜索结果 此处此摘要由 AI 通过多个网上来源生成。在“基于来源”下找到用于此摘要的来源链接。
详细了解必应搜索结果 此处组织和汇总搜索结果Spinel is a mineral that belongs to the oxide mineral class. It is a transparent to opaque gemstone that comes in a wide range of colors, including red, lavender, violet, blue, green, brown, and black. The most valuable and desirable Spinel color is a deep blood red, though blue, yellow, orange, pink, and purple colors also make fine gemstones. Spinel has a hardness of 8 on the Mohs hardness scale. The value of spinel varies based upon its color, clarity, and rarity.4 来源
Spinel Gem, Price, and Jewelry Information - Gem Society
The gemstone known as spinel is actually one species in a group of related minerals known as the spinel subgroup. They are all isometric aluminum oxides with magnesium, iron, zinc, and traces of other elements. Some of the other minerals in the group are gahnite, galaxite, hercynite, and magnetite. The spinel … 展开
Picotiteis a magnesium and chromium-bearing variety of hercynite with dark green to black colors and an SG of 4.42. 展开
Natural spinelsrange from strong, deep colors to very light pastels and come in all shades of pink, lavender, red, red-orange, purple, blue, and even … 展开
Among natural gemstones, only alexandrite, ruby, sapphire, and diamond exceed spinel in hardness (7.5 to 8). Spinels have excellent resistance to scratches. Furthermore, unlike those other gems, they also lack cleavage. This gives spinels superior resistance … 展开
Spinels are allochromaticgemstones. This means that color in spinels comes from the presence of trace elements acting as chromophores. Spinels free of trace elements appear … 展开
Spinel Gemstone | Spinel Stone - GIA
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. Collector’s Favorite Well-formed spinel crystals are in high demand among mineral collectors.
Spinel - Wikipedia
Spinel is found as a metamorphic mineral in metamorphosed limestones and silica-poor mudstones. It also occurs as a primary mineral in rare mafic igneous rocks; in these igneous rocks, the magmas are relatively deficient in alkalis relative to aluminium, and aluminium oxide may form as the mineral corundum or may combine with magnesia to form spinel. This is why spinel and ruby are often found together. The spinel petrogenesis in mafic magmatic rocks is strongly debated, …
Wikipedia · CC-BY-SA 许可下的文字Everything About The Spinel Gem | Spinel Info & Trivia
2021年8月2日 · Spinel is a mineral with a lot of history, often mistaken for ruby in crown jewels. Learn about its value, sources, colors, and how to choose this rare and beautiful gemstone.
13 Gemmy Facts About Spinel - The Overlooked Gem - Geology.com
- Spectacular Color. What color is spinel? Spinel is every color! Spinel is one of just a few …
- Brilliant Luster. Luster is the intensity and quality of light that is reflected from the surface of …
- Superior Hardness. Spinel is one of the hardest gems. Hardness is the resistance of a …
- Toughness & Durability. Toughness is the ability of a material to resist breaking. Spinel is …
- The New August Birthstone. One of the most important things that can influence the …
Spinel Gemstone Information - An often overlooked …
Learn about spinel, a rare and often flawless gemstone that comes in various colors and has a high hardness rating. Discover its history, spiritual meaning, chakra connection and how to choose the best quality spinel.
Spinel Gem Guide and Properties Chart - Gemstones.com
This Spinel gemstone guide lists qualities of the Spinel gem type, including stone colors, common names, meanings, gemstone hardness and more.
Spinel Gemstone: Types, History, and Value
2024年10月26日 · Spinel Gemstone: Spinel gemstones are known for their vibrant sparkle, durability, and unique colors. Which were historically mistaken for rubies due to their intense red colors are now highly valued for their beauty …
Spinel Gemstone | Spinel Stone - GIA
The most valued spinel colors are the vivid reds and cobalt blues that remind us why spinel was once confused with ruby and sapphire. Although the most commercially important colors are red and pink, mauve- or lilac-colored gems …
Spinel - International Colored Gemstone Association
Learn about spinel, a gem that has been mistaken for ruby and sapphire, and is now an official August birthstone. Discover its colors, history, healing powers, and how to identify natural and synthetic spinel.
