Definition of Corundums. Meaning of Corundums. Synonyms of Corundums

Here you will find one or more explanations in English for the word Corundums. Also in the bottom left of the page several parts of wikipedia pages related to the word Corundums and, of course, Corundums synonyms and on the right images related to the word Corundums.

Definition of Corundums

Corundums
Corundum Co*run"dum (k?-r?n"d?m), n.; pl. Corundums (-d?mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond. Note: The name corundum is sometimes restricted to the non-transparent or coarser kinds. Emery is a dark-colored granular variety, usually admixed with magnetic iron ore.
Corundum
Corundum Co*run"dum (k?-r?n"d?m), n.; pl. Corundums (-d?mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond. Note: The name corundum is sometimes restricted to the non-transparent or coarser kinds. Emery is a dark-colored granular variety, usually admixed with magnetic iron ore.

Meaning of Corundums from wikipedia

- Corundum is a crystalline form of aluminium oxide (Al2O3) typically containing traces of iron, titanium, vanadium, and chromium. It is a rock-forming mineral...
- Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al2O3) with trace amounts of elements such as iron...
- Corundum is the name for a structure prototype in inorganic solids, derived from the namesake polymorph of aluminum oxide (α-Al2O3). Other compounds, especially...
- point. Corundum is the most common naturally occurring crystalline form of aluminium oxide. Rubies and sapphires are gem-quality forms of corundum, which...
- market. This remains the most cost effective and common method of creating corundums today. The flame fusion process is completed in a Verneuil furnace. The...
- mineral corundum (aluminium oxide). Ruby is one of the most po****r traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are...
- or another are not large enough, the mineral will not display cleavage. Corundum, for example, displays no cleavage. Cleavage forms parallel to crystallographic...
- Archaic Period. The island is famous as a source of emery, a rock rich in corundum, which until modern times was one of the best abrasives available. The...
- November 2019. Minieri, Paolo (26 October 2017). "Driving gemstone lovers to corundums. A twenty years tireless work for the most accurate survey on rubies and...
- Adamantine spar is a silky brown variety of corundum. It has a hardness of 9 on the Mohs scale. Yogo sapphire "Adamantine Spar". Archived from the original...