
Tuesday, May 24, 2011
Jewelry Set - for Summer !

Monday, May 23, 2011
Pearls - Looking at the inside !
Above is seen a 5mm pearl purchased as an Akoya cultured pearl. Notice that it is uniformly round from the seed all the way out to the outer nacre layer, which is the thin line you see at the very edge of the pearl. What was quite remarkable about this pearl is that the center of the pearl is a hollow plastic looking bead, not the Mississippi mussel shell bead that was expected. You can see the circular structure of the Akoya cultured pearl with the bead and resulting layers being rather uniform from center to outer nacre layer.


The center is a plastic bead. Apparently someone has found out how to use plastic instead of natural material to get the Pearl to form.
And taking it one step further, perhaps a reused piece of plastic for the starter bead. Why the multiple holes in the starter bead? Was the pearl farmer recycling plastic? Why place a used, multi-drilled plastic starter bead inside an oyster to make what could turn out to be a very expensive South Sea Tahitian Pearl in the first place?
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But then again, it is this type of perplexing problems that is what makes gemology so much fun and of interesting experiences. A lifetime of learning and sharing the wonders of the earth.
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Again thanks to the ISG for the use of pictures and information.
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Thursday, March 4, 2010
ORGANIC Gemstones ! How many ?
Each coral polyp, a tiny marine animal that lives in enormous colonies, extracts calcium carbonate from the sea and exudes it to build a protective home around and above itself. Each generation of polyps dies in its protective home and each succeeding generation builds on top of its predecessor. Gem coral ranges from semitranslucent to opaque and occurs in white, pink, orange, red, blue, violet, golden, and black. The black and golden corals are largely horny organic substances, not calcium carbonate. The finest coral is used to make figurines, cameos, carvings, and beads.
This compact velvet-black coal takes a good polish and is often cut into beads, bracelets, and a wide range of decorative and useful objects.
Pearl-bearing mollusks are found in both salt and fresh water. Salt-water pearls of gem quality are usually preferred for jewelry; they are produced almost entirely by the mollusk Pinctada. Fresh-water pearls are produced by various clams and mussels. Natural pearls come in various shapes: round, pear, drop, egg, and others. They also come in various colors, such as white, cream, light rose, cream rose, black, gray, bronze, blue, dark blue, blue green, red, purple, yellow, and violet.
Wednesday, June 24, 2009
Kentucky & Tennessee "Freshwater Pearl" !

Native Americans of the Atlantic Coastal areas and the Mississippi, Tennessee and Ohio River Basin were the first to collect and use U.S. freshwater mussel pearls and shells. Pearl pendants and ear pendants were worn by both sexes and both pearl and shell were used for decorative purposes on articles of clothing. Some of the tribes used pearls as tributes, reportedly Powhattan (Pocahontas' father) had large stores of pearls received as tribute. These shellfish served as an important supplemental food resource, while the shells themselves were often modified into various tools, such as scrapers and "hoes," bowls and "spoons," and ornaments. Additionally, armlets, pendants, and gaming pieces were made from mussel shell.
Monday, June 15, 2009
Is Japan's Akoya Pearl Industry in danger of Collapse ?
Saltwater akoya oyster pearls have long been a benchmark of quality in the industry, with domestic production peaking at 88.5 billion yen ($900 million) in 1990. But by 2008, output had fallen to one-fifth of that. First, a "red tide" of deadly phytoplankton washed in each year in the mid-1990s, killing two-thirds of the country's akoya oysters. Then the market was flooded with less expensive Chinese freshwater pearls. At the same time, young people's tastes have shifted to more casual accessories. Now the current recession -- the country's deepest in decades -- could be the last straw. Loss-making jeweler Tasaki Pearl has closed seven of its eight pearl farms in Japan this year, and U.S. upscale retailer Tiffany & Co has announced plans to end its pearl-only store outlets. In Wagu, young growers have already drifted away, while their elders see little hope of survival after this year's open tender, which was delayed by a month, resulted in a 50 percent drop in prices.
"Those who can quit are lucky, but many can't because they've got bank debts from the past," said Makoto Yamamoto, president of the Pearl Cultivation Fishery Union in Mie, where one-third of Japanese akoya pearls are produced. "I was always optimistic in the past, even when we had the red tide, but this time I've got no ideas," the 74-year-old veteran said in an interview
Chinese growers have succeeded in cultivating freshwater pearls as big and round as akoya and have been exporting them since the 1990s. Unlike akoya oysters, which can yield a few pearls, a single freshwater mussel can produce as many as 40. China now has 50 times Japan's pearl production capacity and the pearls are much more price-competitive, according to Mikimoto director Takashi Shimokura. There is also more competition now from South Sea and Tahitian pearls which are often bigger than akoya, attracting consumers especially in many western countries. Japan's global exports of cultured pearls have tumbled 60 percent over the last 25 years, and the country currently imports more than double the amount of pearls it exports.
Since last autumn, the country's retailers have seen falls in sales of up to 40 percent at home and 70 percent overseas, a document they submitted when seeking government support showed.
The Japanese government unveiled in late May a 120 billion yen emergency package for small fishery companies as part of a supplementary budget. But that alone won't help, said lower house member Norio Mitsuya, who also sits on parliament's Pearl Promotionary Group. "They (pearl industry) must come up with more innovative ideas. Whining about competition won't change the situation because we can't stop the imports," said Mitsuya. "For survival, the industry as a whole must seriously consider to whom they want to sell and how," he added.
Akoya pearl producers and retailers agree that they need to raise public awareness about the quality of their products. "Not many people know the difference between saltwater and freshwater pearls and that the chance of cultivating a top-class akoya pearl is so small -- less than 1 percent," said Yoshimasa Ohata, president of Ohata Pearl Industry, a pearl processor that also owns oyster beds in Ago Bay. Ohata said an increasing number of pearl stores, especially those on the Internet, are selling freshwater pearls without clear explanations of their origin as they can be sold at lower prices. In an ominous sign, even the company that first gave the world the akoya pearl now appears ambiguous about its future. "As the originator of akoya pearls, we do feel responsible for akoya, but there are also high-quality South Sea pearls," Mikimoto and Co's Shimokura said. "We want to keep providing customers with high-quality jewelry, whether it's akoya, South Sea pearls or diamonds."
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Partial reprint of a Reuters News Article and AGTA story.
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Thursday, September 4, 2008
Plume Agate Pendant Necklace Set
