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SSEF - Leader in coloured gemstone, diamond and pearl testing … · Fissures filled with glassy substances Today the large majority of rubies is heated and contains artificial residues
SSEF - Leader in coloured gemstone, diamond and …...emeralds (or rubies) must possess a certain saturation of green (or red) to earn their valued name. As nature does not discriminate
SSEF - Leader in coloured gemstone, diamond and pearl ... · The objective of gemstone treatments is to improve quality, i.e. to enhance the mat- erial. Such a step is taken when
Chatoyant gemstone or cats eye gemstone
SSEF - Leader in coloured gemstone, diamond and pearl ...€¦ · moissanite is always yellow (Nassau GIA Sym- posium 1999). Moissanite occurs naturally only as tiny dark crystals
SSEF - Leader in coloured gemstone, diamond and pearl ......VI-CT is shown to be a powerful tool for pearl identification. n recent years, we have seen more Interest In natural pearls,
SSEF - Leader in coloured gemstone, diamond and pearl testing … · Boa Esperanca Inhamus Cc Marrua / Vicente Catarina 6 16 5 km Geographical situation of the emerald deposit at
20140228 - Gemfields plc half year results 31 December 2013 · 3.08.2018 · The world’s single largest coloured gemstone producer Legal Disclaimer This document, which has been