The name Opal is derived from Sanskrit word for “stone”. It is divided into three subgroups: precious opals like the black and white, the yellow-red fire opals and the common or “potch” opals. It comes in all colours with its characteristic play of colours, a display of rainbow-like hues which changes with the angle of observation. It is usually cut en cabochon for full effect. Cat’s eye is also made. It is not a very hard stone (6 Moh) and contains water so much care has be taken for setting. Australia is the main producer. Other localities include USA, Mexico and Brazil.
GEMS AND GEMOLOGY
Gemology has been a fascinating hobby of mine for over 20 years, reading up “Gemstones of the World” by Walter Schumann, attending practical classes on coloured gemstones, and visiting gem mining areas. I acquired some pieces, both priced and less well known, of various colours, shapes and cuts from gem-producing areas like Burma,Sri Lanka, Thailand, Cambodia etc. These have since grown to quite a collection.
Among the 63 gems species are: traditional gemstones - corundum(sapphire,ruby), beryl (emerald,aquamarine), fancy diamond; and others - spinel, chrysoberyl(cat's eye,alexandrite), tanzanite, garnet(tsavorite, spessartite,), tourmaline(rubellite,indocolite), zircon, topaz, quartz(amethyst,citrine), chalcedony(agate,chrysoprase), feldspar(moonstone,labradorite), kyanite, peridot, kunsite, scapolite, flourite and many other lesser known gemstones. (view complete list on blog archive on the right with traditional gemstones at the bottom. click on types of interest to you.)
I'm now divesting my collection. An abbreviated description is provided below each photo, including price. Example 1: m2(size ref) tq(turquoise gem) ov(oval shape) plgnbl(pale greenish blue colour) afg ( Afghanistan country) 3.82 (carat weight) (18.7x8.5mm)(dimensions LxW) in mm) op (opaque clarity) 175 (USD 175 price) 10b30 N18(ref no and location). Example 2:"sa (type sapphire), ov(shape oval), dpbl(colour deep blue), af(origin Africa), 4.43(weight in carat), (11.3x10.2x4.6mm)dimension LxWxD, ec(clarity eyeclean), 1k(price US$1000)".
Personal viewing can be done for friends in Singapore.
Those outside Singapore, purchase can be secured via registered post upon payment in USD(or Singapore equivalent) via paypal, money/postal order, account transfer/cheque (Singapore) or other mutually agreed arrangement. Do have a look and contact me for any other details.
Happy viewing!
Friday, January 15, 2010
c%20450%208b36%20M14%5B7%5D.png "l1 op ovc wh-mctt 9.16(17.5x14.5x5.5)c 450 8b36 M14")
c%20400%20TE%5B4%5D.png "m2a op ovc gy-mctt au 3.60(12x10.2x4.5)c 400 TE")
tp%20400%20%208b37%20T45%5B13%5D.jpg "l1 op ce ov y ta 8.55(16.5x11.1x8.2)tp 400 8b37 T45")
c%20200%208b37%20T47%5B5%5D.png "m2b op ce ov ta 3.46(10.8x8.2x6.8)c 200 8b37 T47")
si%20200%208b37%20C4%5B11%5D.jpg "m2 op ce ov y au 3.68(10.1x8x7.8)si 200 8b37 C4")
tp%20300%208b37%20T80%5B9%5D.png "l op ce ov o ta 5.20(12.8x10.5x7.3)tp 300 8b37 T80")
tl%20200%208b37%20L23%5B12%5D.jpg)
tlc%20200%208b37%20M21%5B9%5D.jpg "l1 op ovc pk pe 9.39(20x15x5)tlc 200 8b37 M21")
tp1u%20150%208b36%20c2%5B9%5D.jpg "m2c op bg prl au 3.16(12.8x10.2x3)tp1u 150 8b36 c2")
%20150%208b36%20M15%5B11%5D.jpg "m2d op ovc wh blgn au 3.0(11x10x3.2) 150 8b36 M15")
tp%20400%20%208b37%20T45%5B8%5D.jpg){kind=link}
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