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!

Sunday, January 10, 2010

CITRINE (QUARTZ) – “CITRIS” YELLOW ROSE

Citrine is the yellow or golden variety of quartz. The name is derived from the colour of the “citrus” and the colouration is due to the presence of iron. Natural citrine is usually pale yellow and rare, the exception being the beautiful golden yellow of the Madeira citrine from Brazil. Most of commercial citrines are heat-treated amethyst or smokey quartz. Almost all heat-treated citrines have a reddish tint. The best gem quality material come from Brazil, Spain, Madagascar and Russia.
Displayed below are both golden yellow and yellow faceted citrine, 6 cut en cabochon and 2 carvings.
h1 cit fn gy 26.16(23x17x14.4)c 650 9b21 L200h1 cit fn gy 26.16(23x17x14.4)c 650 9b21 L200      
h1a cit ovcb gy af 24.94(22x15.4x11.9)c 625 9b21 T112
h1a cit ovcb gy af 24.94(22x15.4x11.9)c 625 9b21 T112
h1b cit cu gy 24.14(20x15.5x12)c 06 9b22 T112
h1b cit cu gy 24.14(20x15.5x12)c 06 9b22 T112
 h1c cit pr dpgy af 23.84(25x17.5x12)c 06k 9b22 N68
h1c cit pr dpgy af 23.84(25x17.5x12)c 06k 9b22 N68

h1d cit em dpgo ma 20.41(21.5x14x9.4)cu 05k 9b26 N50 h1d cit em dpgo ma 20.41(21.5x14x9.4)cu 05k 9b26 N50
h4 cit ov gy af 14.44(17.4x14.1x10.3)c 360 9b24 N37
h1e cit ov dko ma 20.18(19.8x17x10.5)c 05k 9b25 N87
h1e cit ov dko ma 20.18(19.8x17x10.5)c 05k 9b25 N87
h2 cit ov dko ma 19.45(20x16.5x10)c 05k 9b N62
 h2 cit ov dko ma 19.45(20x16.5x10)c 05k 9b N62
h4 cit ov gy af 14.44(17.4x14.1x10.3)c 360 9b24 N37


h4a cit mqcb gy 14.07(24x11.7x9.4)c 350 9b22 N41
h4a cit mqcb gy 14.07(24x11.7x9.4)c 350 9b22 N41
 h5 cit ovcb go ma 12.16(15.1x13.1x11)c 400 9b24 T111
h5 cit ovcb go ma 12.16(15.1x13.1x11)c 400 9b24 T111

h6 cit ov yhn br 11.87(18x13.1x9.3)ecu 03k 9b24 N17
h6 cit ov yhn br 11.87(18x13.1x9.3)ecu 03k 9b24 N17
 h6a cit fn gy ma 11.39(17.6x12.3x9.9)c 03k 9b23 N25
h6a cit fn gy ma 11.39(17.6x12.3x9.9)c 03k 9b23 N25
h cit ov ord ma 10.07(17.3x13.5x7.8)ec 350 9b24 T88
h cit ov ord ma 10.07(17.3x13.5x7.8)ec 350 9b24 T88

l1a cit tr gy 9.65(19.6x11.1x10.1)c 250 9b23 N17
l1a cit tr gy 9.65(19.6x11.1x10.1)c 250 9b23 N17
 
    l1b cit ovcb gy 8.62(14.3x12xx9.3)ec 300 9b23 N72
l1b cit ovcb gy 8.62(14.3x12xx9.3)ec 300 9b23 N72
  
     l1b cit prcb g ma 8.58(15.8x14.6x6.9)c 200 9b21 N18
l1b cit prcb g ma 8.58(15.8x14.6x6.9)c 200 9b21 N18

l3 cit ov gy 6.46(16.1x9x7.5)c 175 AG 9b22 N10 
l3 cit ov gy 6.46(16.1x9x7.5)c 175 AG 9b22 N10      
l cit ov gy 5.15(14.8x9.9x6.2)c 150 9b23 N41
l cit ov gy 5.15(14.8x9.9x6.2)c 150 9b23 N41
 
    m1 cit rncb gy 4.43(10.4x8)ec 150 9b23 N41
m1 cit rncb gy 4.43(10.4x8)ec 150 9b23 N41
  

  m1a cit pr oy 4.15(14.4x9.2x6.2)c 150 9b23 N41
m1a cit pr oy 4.15(14.4x9.2x6.2)c 150 9b23 N41    
    m2 cit pr gy 3.59(12.2x9.1x6.6)ec 125 9b23 C10
m2 cit pr gy 3.59(12.2x9.1x6.6)ec 125 9b23 C10
 m3 cit em gy 2.13(9.5x6.9x4.9)ec 100 9b23 N10
m3 cit em gy 2.13(9.5x6.9x4.9)ec 100 9b23 N10
   
g cit ov y 36.02(24x19.5x13.5)c 360 9b30 M46g cit ov y 36.02(24x19.5x13.5)c 360 9b30 M46
 ga cit em y 35.04(20.4X15.9X13.1)c 400 9b26 N70
ga cit em y 35.04(20.4X15.9X13.1)c 400 9b26 N70


    gb cit em wky 32.95(21.6x18.5x11.1)c 330 9b29
gb cit em wky 32.95(21.6x18.5x11.1)c 330 9b29
 h1 bi-cit em lm-bn 26.64(29x13x8.75)c 400 9b45 N40
h1 bi-cit em lm-bn 26.64(29x13x8.75)c 400 9b45 N40
l1b1 cit em y 8.72(14.9x10.5x7.6)c 150 9b26 NC9
l1b1 cit em y 8.72(14.9x10.5x7.6)c 150 9b26 NC9
        l1b2 cit pr ply 8.43(18x13x6.7)c 150 9b32 N24
l1b2 cit pr ply 8.43(18x13x6.7)c 150 9b32 N24

  zl1b3 cit ov y 8.16(16.2x12.2x8)c 200 9b27 N28
zl1b3 cit ov y 8.16(16.2x12.2x8)c 200 9b27 N28
       l3 cit ht y 6.32(14.7x13.1x6.7)c 125 9b26 N31
l3 cit ht y 6.32(14.7x13.1x6.7)c 125 9b26 N31
h2 cit rnc gy af 16.90(17.2x7.8)si 150 9b33 L4 
h2 cit rnc gy af 16.90(17.2x7.8)si 150 9b33 L4   
 
    h2a cit ht o br 16.88(15.6x15.3x6.2)c 250 9b21 N20
h2a cit ht o br 16.88(15.6x15.3x6.2)c 250 9b21 N20
h3 cit ov hn 14.0(18.8x14.1x7.6)tp 230 10b29 N62
h3 cit ov hn 14.0(18.8x14.1x7.6)tp 230 10b29 N62
 l1 cit ov hn 9.56(13.2x12x9.1)ec 200 10b29 TE94
l1 cit ov hn 9.56(13.2x12x9.1)ec 200 10b29 TE94
l2 cit ov dko 7.89(13x11.5x7.8)si 150 10b29 C10
l2 cit ov dko 7.89(13x11.5x7.8)si 150 10b29 C10
 l3 cit ov hn 6.40(12.7x9.8x7.5)c 130 10b29 N22
l3 cit ov hn 6.40(12.7x9.8x7.5)c 130 10b29 N22
 
    l1 cit sp gy 9.80(10.9m)c 120 7b24 L18 
  l1 cit sp gy 9.80(10.9m)c 120 7b24 L18
  
    l2 cit prd1 f'scale plg 7.50(16x9) 100 7b24 C9
l2 cit prd1 f'scale plg 7.50(16x9) 100  7b24 C9
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)