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Lonsdaleite (named in honour of Kathleen Lonsdale), also called hexagonal diamond in reference to the crystal structure, is an allotrope of carbon with a hexagonal ...
A fixture of fashion spreads since its founding in 1980, when a Brooklyn husband-and-wife were inspired by the 1950s and 60s costume jewelry known as “travel jewelry,” meant to look and feel ...
The bonding occurs through sp 3 hybridized orbitals to give a C-C bond length of 154 pm. This network of unstrained covalent bonds makes diamond extremely strong. Diamond is thermodynamically less stable than graphite at pressures below 1.7 GPa. [5] [6] [7]
Lonsdaleite is part of WikiProject Rocks and minerals, an attempt at creating a standardized, informative, comprehensive and easy-to-use rocks and minerals resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information.
Signet Jewelers Ltd. (Ratner Group 1949–1993 then Signet Group plc to September 2008) is, as of 2015, the world's largest retailer of diamond jewellery. [1] The company is domiciled in Bermuda and headquartered in Akron, Ohio, and is listed on the New York Stock Exchange.
Pandora A/S (often styled PANDORA) is a Danish jewelry manufacturer and retailer founded in 1982 by Per Enevoldsen. [8] The company started as a family-run jewelry shop in Copenhagen. Pandora is known for its customizable charm bracelets, designer rings, earrings, necklaces and (now discontinued) watches.
As a marketing strategy, the Zale brothers instituted a credit plan whereby customers could pay "a penny down and a dollar a week", making jewelry and other merchandise affordable for the average working American. The success of this credit policy led to the company expanding to a total of 12 stores in Oklahoma and Texas by 1941.