Antieke juwelen glossarium
(verklarende woordenlijst)

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Synthetic periclase

A synthetic gemstone that resembles the natural periclase. It is almost colourless and has been produced by the flame fusion process with the Veneuil Furnace. A trade-name for one variety is 'Lavernite'.

From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson