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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 ...
This part will be removed by me and rewritten, but ultimately should be entirely rewritten with new refs as the book "computational methods and experimental meassurements XV" cites the exact same refs as the former wikipedia refs (mindat. org and the book about w-BN and lonsdaleite) : a "serious" book citing mindat.org as a ref is a joke.
Jewellery (or jewelry in American English) consists of decorative items worn for personal adornment such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes.
Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond.It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon, with minor crystalline precipitates filling pores and occasional reduced metal inclusions. [1]
Dame Kathleen Lonsdale DBE FRS (née Yardley; 28 January 1903 – 1 April 1971) was a British crystallographer, pacifist, and prison reform activist. She proved, in 1929, that the benzene ring is flat by using X-ray diffraction methods to elucidate the structure of hexamethylbenzene. [2]
The brooch was given to Elizabeth II by Annie Allum, wife of John Allum, Mayor of Auckland, during her 1953 visit to New Zealand, [106] [68] as a Christmas present "from the women of Auckland". [106] It is "bejewelled with round brilliant and baguette shaped diamonds", having been designed to form the shape of a fern, an emblem of New Zealand ...