corundum
91Chromium(III) oxide — Chromium(III) oxide …
92Synthetic alexandrite — is a crystal which has been created by the floating zone method. This method is also used to synthetically grow a variety of crystals: YAG (Yttrium Aluminum Garnet) in white, blue, pink and several other shades, ruby, chrysoberyl and, most and… …
93Tairus — (Russian: Тайрус, a portmanteau of Тайско (Thai) and Русский (Russian)) is a synthetic gemstone manufacturer. The company is a joint venture between the Siberian branch of the Russian Academy of Sciences and Tairus Co., Ltd. of Bangkok, Thailand …
94Plasma electrolytic oxidation — (PEO), also known as microarc oxidation (MAO), is an electrochemical surface treatment process for generating oxide coatings on metals. It is similar to anodizing, but it employs higher potentials, so that discharges[1] occur and the resulting… …
95Bauxite fibrosis — Classification and external resources Bauxite with unweathered rock core ICD 10 J …
96Padparadscha — is a pinkish orange to orangy pink coloured corundum, with a low to medium saturation and light tone, originally being mined in Sri Lanka, but also found in deposits in Vietnam and Africa. Padparadscha sapphires are very rare, and highly valued… …
97USS Limestone (IX-158) — USS Limestone (IX 158), a Trefoil class concrete barge designated an unclassified miscellaneous vessel, was the only ship of the United States Navy to be named for limestone, a rock consisting chiefly of calcium carbonate, which yields lime when… …
98William A. Spinks — Infobox Person name = William A. Spinks image size = 257 caption = William A. Spinks in 1924 (passport photo from Dept. of State microfilm) birth date = July 11, 1865, birth place = San Jose, California death date = death date and… …
99Peter Lu — Peter James Lu, PhD (陸述義, b. 1978 in Cleveland, OH) is a post doctoral research fellow in the Department of Physics at Harvard University, Cambridge, Massachusetts. His most widely known discovery, amidst pursuits in several diverse fields (see… …
100Honing (metalworking) — Honing is a manufacturing process that produces a precision surface on a workpiece by scrubbing an abrasive stone against it along a controlled path. Honing is primarily used to improve the geometric form of a surface, but may also improve… …
