HRH Prince Charles Investiture Sulphide Paperweight

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The art of cameo under glass called "sulphide" comes from this observation that the "drops of rain or dew give a silvery aspect to the leaves, which are villous and rough to the touch. From this it has been deduced that an unpolished object which does not melt at the temperature of crystal could, incrusted in its depth, simulate silver." (Pellat 1849) As early as 1750 sulphides are found in some European crystal. For the process to be effective the crystal must have a lead content of at least 35%. The art form of cameo under glass extremely popular during the 19 th Century. The Cristalleries d'Albret is located in the French town of Vianne in the Gascogne region. The factory was founded in 1918 and was originally named the Cristalleries et Verreries de Vianne. It is in a walled town that was a barony controlled by Cardinal Richelieu. It had been known for its glass industry prior to the company's founding. The cameo of His Royal Highness Prince Charles (1948- ) is the work of one of the official sculptors of the French Mint. On July 1, 1969 , he was invested as Prince of Wales by the Queen at Caernarvon Castle , Wales . The sulfide depicts him wearing his investiture robes and crown. The edition of this sulphide has a deep-purple diamond-hatched background design. It is in mint condition and will make an outstanding gift for educators read more

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