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!

Thursday, January 7, 2010

TOURMALINE – WONDERFUL WATERMELON AND CAT’S EYE

Tourmaline family refers to a number of related species and varieties with the same basic crystal structure. Their colour range from colourless, pink, red, yellow, brown, green, blue, violet, to common black and the delightful famous multi-coloured. The name comes from the Sinhalese Turamali, meaning ”stone with mixed colours.”  Other locations are  Russia, USA, Madagascar, Brazil and East Africa. It is also the birthstone for March. It is a beautiful and hard (7.5 MOH) stone, very suitable  for jewellery.

Mixed colour tourmaline is a signature feature as the Sinhalese name implies. They are made up of two (bicolour) or more (multi/parti colour) colours with individual crystals containing up to 15 different colours or shades. Watermelon tourmaline is a bi-colour with a pink centre and green (or another colour) rim, akin to the fruit itself.

Bi-colour tourmaline – the nicest and most sought after are the 50-50 split of two colours, including the watermelon.
 h3 bi-tou em rdpk-gn 50spt 14.78(13x12x10.2)c 1.5k 2b51LN280
h3 bi-tou em rdpk-gn 50spt 14.78(13x12x10.2)c 1.5k 2b51LN280
l1a2 bi-tou cu gn-opk spt 9.26(12.4x11.6x7.8)ec 1k 2b53N133
l1a2 bi-tou cu gn-opk spt 9.26(12.4x11.6x7.8)ec 1k 2b53N133


l1a bi-tou bg gn-pk 30-70spt 9.02(15.5x9.8x6.9)ec 1k N100
l1a bi-tou bg gn-pk 30-70spt 9.02(15.5x9.8x6.9)ec 1k N100
  l1b bi-tou em rd-gy 40-60spt 8.09(13.4x11x5.7)vsi 08 b51N21
l1b bi-tou em rd-gy 40-60spt 8.09(13.4x11x5.7)vsi 08 b51N21
l3d1 bi-tou ov gn-rdpk spt 6.64(11.3x10.4x8)c 07 2b56 N82
l3d1 bi-tou ov gn-rdpk spt 6.64(11.3x10.4x8)c 07 2b56 N82
l3d2 bi-tou ov bl-rdpk 6.61(12.2x10.7x7.6)c 065 2b56 N64
l3d2 bi-tou ov bl-rdpk 6.61(12.2x10.7x7.6)c 065 2b56 N64
 la2 bi-tou ra o-y 5.85(10x9.5x7.4)c 06 2b58 N41
la2 bi-tou ra o-y 5.85(10x9.5x7.4)c 06 2b58 N41
 la5 bi-tou cu gn-rdpk 5.50(11.6x8.8x6.1)c 055 2b58 N86
la5 bi-tou cu gn-rdpk 5.50(11.6x8.8x6.1)c 055 2b58 N86
 la3 bi-tou ov gn-pk 70-30spt 5.74(11x10.5x7)ec 0575 2b56 N100
la3 bi-tou ov gn-pk 70-30spt 5.74(11x10.5x7)ec 0575 2b56 N100
la4 bi-tou ovcb gn-pk wm 5.52(12.3x10x6.5)c 06 2b56 N100
la3 bi-tou ov pk-gn wm 5.74(11x10.5x7)ec08 2b56 N100
m2e1 bi-tou cu bl-pk 50spt 3.42(8.7x7.5x6.5)c 07 T202
m2e1 bi-tou cu bl-pk 50spt 3.42(8.7x7.5x6.5)c 07 T202
m2g2 bi-tou ra gn-pk spt 3.17(7.1x6.8)c 06 2b59 T122
m2g2 bi-tou ra gn-pk spt 3.17(7.1x6.8)c 06 2b59 T122


m2g4 bi-tou emlg bl-rdpk 50spt 3.13(12.5x5.6x4.5)c 06 sbT127
  m2g4 bi-tou emlg bl-rdpk 50spt 3.13(12.5x5.6x4.5)c 06 sbT127
m6a1 s bi-tou br o-rdpk 2.26(9.7x5.9)ec 03 E62
m6a1 s bi-tou br o-rdpk 2.26(9.7x5.9)ec 03 E62
 m3a3 bi-tou prcb gn-rdpk 2.96(9.8x9.7x5.3)c 04 sb N52
m3a3 bi-tou prcb gn-rdpk 2.96(9.8x9.7x5.3)c 04 sb N52
 m3b2 bi-tou cu gn-rdpk 50spt 2.87(8.8x7.1x5.6)ec 04 sb N82
m3b2 bi-tou cu gn-rdpk 50spt 2.87(8.8x7.1x5.6)ec 04 sb N82
m6a2 bi-tou hx ygn-o 2.25(8.5x7x5)c 025  N35
m6a2 bi-tou hx ygn-o 2.25(8.5x7x5)c 025  N35
s1c1 bi-tou ht blgn-pk wm 1.74ct (8.1x 7.9x4.5)c 07 sbT170 NFS
s1c1 bi-tou ht blgn-pk wm 1.74ct (8.1x 7.9x4.5)c 07 sbT170 NFS
s2 bi-tou hx bl-rdpk 1.52(6.8x5.8x5.4)c 02 N41
s2 bi-tou hx bl-rdpk 1.52(6.8x5.8x5.4)c 02 N41
s bi-tou di bl-pk 50spt 1.34(8.9x6.1x5.1)c 05 sbT52 NFS
s bi-tou di bl-pk 50spt 1.34(8.9x6.1x5.1)c 05 sbT52 NFS

Multi/Parti coloured tourmaline
l2 m-tou ov bn-gn-pk-y 7.95(12.2x10.9x8.7)c 1k 2b38L261
l2 m-tou ov bn-gn-pk-y 7.95(12.2x10.9x8.7)c 1k 2b38L261
 
l3 m-tou ra rd-pk-y-gn 6.04(9.6x9.4x7.7)ec 07 2b39N41
l3 m-tou ra rd-pk-y-gn 6.04(9.6x9.4x7.7)ec 07 2b39N41
l2a m-tou pr di chm-gn-pk-y 7.80(15x12x6.8)c 08 2b39-109
l2a m-tou pr di chm-gn-pk-y 7.80(15x12x6.8)c 08 2b39-109
l m-tou ov gn-o-pk 5.25(12.8x9.8x6.9)c 05 2b38-40 
l m-tou ov gn-o-pk 5.25(12.8x9.8x6.9)c 05 2b38-40
m1 m-tou ov bn-g-o 4.46(10.6x9x6.5)vsi 035 2b38-41
m1 m-tou ov bn-g-o 4.46(10.6x9x6.5)vsi 035 2b38-41
 m2a m-tou ra gn-o-pk-pp 3.69(8x7.7x7.1)c 04 2b39 N88
m2a m-tou ra gn-o-pk-pp 3.69(8x7.7x7.1)c 04 2b39 N88
m2c m-tou ra gn-bl-o-pk 3.20(8.2x7.4x5.9)ec 1k 2b39 T53 NFS
m2c m-tou ra gn-bl-o-pk 3.20(8.2x7.4x5.9)ec 1k 2b39 T53 NFS
 m3 m-tou ra bn-gn-pp-rd 2.89(9.7sqx5.7)ec 04 2b40 N82
m3 m-tou ra bn-gn-pp-rd 2.89(9.7sqx5.7)ec 04 2b40 N82
m3a m-tou ov g-gn-pk 2.74(9.5x8x5.1)ec 03 2b28-N52
m3a m-tou ov g-gn-pk 2.74(9.5x8x5.1)ec 03 2b28-N52
 m4 m-tou em bl-pk-gn 2.65(8.3x6.9x5.3)c 04 2b40 N71
 m5 m-tou ov bn-g-o-y 2.43(9.4x7.8x4.8)ec 025 -28find
m5 m-tou ov bn-g-o-y 2.43(9.4x7.8x4.8)ec 025 -28find
m7b m-tou tr gn-o-pk-y 2.14(8.4x8x5.2)c 03 2b28 N52
m7b m-tou tr gn-o-pk-y 2.14(8.4x8x5.2)c 03 2b28 N52

Cat’s eye tourmaline – as nice as a chrysoberyl cat’s eye

h1 tou ce ov dkolgn 20.70(17.3x15.2x9.2) 1k 6b23L44      h1 tou ce ov dkolgn 20.70(17.3x15.2x9.2) 1k 6b23L44 




h ce ov gn 11.35(13x11.8x9.1)si  08 6b24 N31
h ce ov gn 11.35(13x11.8x9.1)si  08 6b24 N31
h tou ce ov dprdpk 11.28(14.3x12.9x7.5)si 1k 6b20 T141
h tou ce ov dprdpk 11.28(14.3x12.9x7.5)si 1k 6b20 T141
l1 tou ce olgn 9.01(13x10.3x8.2)si 06 6b24 N17
l1 tou ce olgn 9.01(13x10.3x8.2)si 06 6b24 N17
l1 tou ce ov gn 8.12(12x9.8x7.6)si 07 6b23N100
l1 tou ce ov gn 8.12(12x9.8x7.6)si 07 6b23N100
l tou ce ov dpgn 5.88(11.9x9x6.7)u 06 6b23 N21
l tou ce ov dpgn 5.88(11.9x9x6.7)u 06 6b23 N21
m1 tou ce ov pk 4.81(10.3x9.1x6)ec 06 6b22 T144
m1 tou ce ov pk 4.81(10.3x9.1x6)ec 06 6b22 T144
m1a tou ce ov blgn 4.63(10.2x9.5x5.6)tp 06 6b24 T74
m1a tou ce ov blgn 4.63(10.2x9.5x5.6)tp 06 6b24 T74
m2 tou ce ov wm 3.28(8.6x6)c 05 6b24 T102
m2 tou ce ov wm 3.28(8.6x6)c 05 6b24 T102
m2a tou ce ov gygn 3.16(10x8)c 04 6b24 N57 
m2a tou ce ov gygn 3.16(10x8)c 04 6b24 N57
m3a tou ce ov rdpk 2.36(9.5x7x4.3)c 05 6b20 T115
m3a tou ce ov rdpk 2.36(9.5x7x4.3)c 05 6b20 T115
m3b tou ce ov rdpk 2.25(8.1x7.4x4.9)c 05 6b20 T72
m3b tou ce ov rdpk 2.25(8.1x7.4x4.9)c 05 6b20 T72

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