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Jade
  • Introduction to Jade
  • Culture in Jadeite
  • Chemical and Physical Properties of Jade
  • Classification of Jade
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  • Jadeite Jade and FTIR
  • B-jade and FTIR Spectroscopy
  • Sources of Jadeite Jade
  • Testing Jadeite
  • Value Factors
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  • Colours in Jadeite
  • Clarity and Translucency
  • Fashioning(Cut) in Jadeite
  • Texture in Jadeite-Jade
  • Raman Spectra of Jadeite-Jade
  • Reference sites for Jadeite-Jade
  • After Sales Maintenance of Jade
Pearls
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Contents
  1. General Introduction
  2. Origin and Occurrence
  3. Crystallography
  4. Physical Characteristics of Gem Materials
  5. Electromagnetic Spectrum and Associated Phenomena
  6. Visual and other Characteristics
  7. Gemmological Equipment
  8. Advanced Identification Techniques
  9. Synthesis and Manufacturing
  10. Imitations and Composite Stones
  11. Gemstone Treatments
  12. Gemstone Fashioning
  13. Gems in Jewellery
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Cultured Pearls, Just a Reminder
News
It is probably necessary to remind ourselves that though cultured pearls are produced by oysters in a natural environment, it was initiated artificially through human intervention.

And it is this intervention that allows mass production. What used to be prized gemstones are now available in reasonably large sizes  (12mm and above, fresh water pearls) due to indiscriminate farming of pearl oysters by the chinese.

Are South Sea Pearls still that blemish free? Ecologically harvested no doubt, it is still a mass production run. And best, with genetically modified oysters, we can be producing huge pearls in a fraction of the time!

When will all these mass production insanity cease? What used to be prized are now so heavily commercialised that strings of gorgeous pearls today are stigmatised.

I wonder what CIBJO will do next with classification and nomenclature: cultured pearls from natural oysters, cultured pearls from genetically modified oysters?!

http://www.news.com.au/couriermail/story/0,27574,25892574-3102,00.html
· aloysiushan on August 07 2009 06:08:44· 34 Comments · 431 Reads · Print
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