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- Dictionarygemstone/ˈdʒɛmstəʊn/
noun
- 1. a precious or semi-precious stone, especially one cut, polished, and used in a piece of jewellery.
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Sep 24, 2024 · A gemstone is a mineral highly prized for beauty, durability, and rarity. Learn about the different types, cutting methods, and properties of gemstones, as well as their historical and cultural significance.
- Onyx
Onyx, striped, semiprecious variety of the silica mineral...
- Lazurite
Lazurite, blue variety of the mineral sodalite (q.v.) that...
- Tourmaline
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- Asterism
asterism, in mineralogy, starlike figure exhibited in light...
- Beryl
Before 1925 beryl was used only as a gemstone. Thereafter,...
- Chalcedony
chalcedony, a very fine-grained (cryptocrystalline) variety...
- Onyx
- Characteristics of A Gemstone
- Classification
- Flaws Or Material Within A Stone Can Be Represented as inclusions.
- Cutting and Polishing
The traditional classification in the West, which goes back to the ancient Greeks, begins with a distinction between semi-precious and precious; similar distinctions are prepared in other cultures. The precious stones are ruby, diamond, emerald, and sapphire in current use, like the other semi-precious gemstones. This particular distinction reflect...
Gemstones can be classified into multiple species, varieties, and groups. For example, ruby is the red variety of the corundum species, while any other color of corundum can be considered as sapphire. Other examples are aquamarine (blue), emerald (green), goshenite (colorless), red beryl (red), morganite (pink), and heliodor (yellow), which are all...
Gemstones can also be classified in terms of their "water." This is a recognized grading of the luster of gems, "brilliance" or transparency. Extremely transparent gems are known to be the "first water," while the less transparent gems are the "second" or "third water." Value Gemstones contain no universally accepted grading system. Diamonds are gr...
A few gemstones can be used as gems in the crystal or in other forms where they are found. However, most of them are cut and polished for jewelry usages. The two major classifications are stones cut as smooth, and the dome-shaped stones are known as cabochons, and stones which are cut with a faceting machine by polishing the small flat windows are ...
A gemstone is a jewel, especially a precious stone cut into a regular shape. Learn more about the types, properties and uses of gemstones with Cambridge Dictionary.
Learn the challenges of defining a gem, from beauty and durability to cutting and polishing. Explore the exceptions and variations of gemstones, from minerals to organics, and their uses in jewelry.
Learn about hundreds of gemstones, their properties, colors, and sources. Find detailed information for any gemstone you are interested in, from actinolite to zircon.
Jun 11, 2022 · A gem is a valuable ornamental form of a mineral, rock, or other solid. A mineral is a natural crystalline solid with a well-defined composition. A rock consists of one or more minerals.
What are Gemstones? Embedded within the earth's crust, gemstones are nature's most beautiful and intriguing wonders. These precious and semi-precious stones have captivated humanity for centuries with their dazzling array of colors, intricate patterns, and alluring luster.
