Kamis, 09 Juli 2015

indonesian pearls

paket wisata lombok Indonesian pearls are produced by the Pinctada Maxima oyster. The silver-lip oyster produces white and silver coloured pearls whereas the golden-lip oyster produces golden pearls. Australia and Indonesia are the two main producers for these pearls. The Philippines are famous for their production of golden pearls. Burma (Myanmar) is one further producer. The difference in colour is due to natural organic pigments present in the shell. tour lombok The cultivation of Pinctada Maxima varies from region to region. Whilst in the Philippines they are the product of hatchery production, adult oysters can be collected in the wild under a strict quota system in Australia. The difference to Akoya pearls is their large size, greater nacreous overgrowth. Whereas Akoya pearls rarely come in sizes greater than 20mm, South Sea pearls can reach up to 20mm. The shell of Pinctada Maxima is greater than that of other species which means that it can grow larger pearls and can also be used as nucleus material. paket wisata lombok Andy Müller estimated that white and golden South Sea cultured pearl production was worth US$172million in 2009. Whereas Indonesia is the largest producer of these pearls (43% production share, 27% share in value), Australia produces pearls of higher value (38% production, 61% share in value). Gem Expert – Prof Dr. H.A. Hänni, FGA - paket tour lombok Prof. Hänni received his Fellowship Diploma (FGA) from the Gemmological Association of Great Britain in 1976. He also holds an Expert Diploma of the Swiss Gemmological Society SGG where he has been serving many years as member of the scientific commission and still participates as an instructor during the annual education programme. indonesian pearl - mutiara lombok As a former director of the SSEF Swiss Gemmological Institute in Basel he has been guiding the gemmological laboratory for 30 years and was shaping the development of international gemmology. With his staff he supplied the industry with test reports and ensured the international trade of gemstones and high-class jewellery though the reports. 2010 Prof. Hänni retired from SSEF Swiss Gemmological Institute. His academic relationship with Basel University resulted from studies that lead to a doctor’s degree in earth sciences, and later he obtained a university teaching position. harga mutiara He has been teaching gemmology over 20 years as a professor of gemmology, first in Basel, later in Lausanne where he is still active. Prof. Hänni got also a distinction from the ICA international Color Stone Association in 2007 for his contributions to the international gemstone industry. Indonesia is the largest producer in volume of white and golden South Sea pearls from the Pinctada maxima oyster. Other species are also cultivated but to a much smaller extent. lombok tour

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