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Because diamond was unknown prior to the Roman period, and because of the similarity between the words smiris, the Egyptian asmir "emery", a grade of corundum used to polish gemstones, the Hebrew word shamir may be corundum, which exhibits the same qualities, and is used in India for the same purposes as the diamond.
Uvarovite is a chromium-bearing garnet group species with the formula: Ca 3 Cr 2 (Si O 4) 3. It was discovered in 1832 by Germain Henri Hess who named it after Count Sergei Uvarov (1765–1855), a Russian statesman and amateur mineral collector. [2] It is classified in the ugrandite group alongside the other calcium-bearing garnets andradite ...
Rhodolite is a varietal name for rose-pink to red mineral pyrope, a species in the garnet group. It was first described from Cowee Valley , Macon County , North Carolina . [ 2 ] The name is derived from the Greek "rhodon" for "rose-like", in common with other pink mineral types (such as rhodochrosite , rhodonite ).
Garnet sand is a good abrasive, and a common replacement for silica sand in sand blasting. Alluvial garnet grains which are rounder are more suitable for such blasting treatments. Mixed with very high pressure water, garnet is used to cut steel and other materials in water jets. For water jet cutting, garnet extracted from hard rock is suitable ...
The use of stone vessels made from soft limestone/chalkstone among Jews during the Second Temple period and beyond was widespread across Judea, Galilee and the Golan Heights. Initially appearing in the early 1st century BCE, these vessels continued to be utilized in each region for differing lengths of time.
Eclogites are defined as bi-mineralic, broadly basaltic rocks which have been classified into Groups A, B and C based on the chemistry of their primary mineral phases, garnet and clinopyroxene. [3] [4] The classification distinguishes each group based on the jadeite content of clinopyroxene and pyrope in garnet. [4]
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Almandine (/ ˈ æ l m ən d ɪ n /), also known as almandite, is a species of mineral belonging to the garnet group. The name is a corruption of alabandicus, which is the name applied by Pliny the Elder to a stone found or worked at Alabanda, a town in Caria in Asia Minor. Almandine is an iron alumina garnet, of deep red color, inclining to ...