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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (4774): October Birthstones Tourmaline, Fire Opal, Moss Opal, Opal, Opal Doublet, Cat's Eye Tourmaline, Paraiba Tourmaline, Chrome Tourmaline, Rubellite Tourmaline, Boulder Opal, Chocolate Opal, Black Opal Clear All
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ID: 3292456 pcs
4.50ctw Black Opal
8.00mm x 6.03mm x 3.29mm
USD 180.00
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ID: 3502811 pcs
13.56ct Fire Opal
16.13mm x 14.80mm x 10.64mm
USD 678.00
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ID: 3780424 pcs
2.78ctw Tourmaline
6.86mm x 5.13mm x 2.95mm
USD 134.39
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ID: 3485351 pcs
2.09ct Tourmaline
19.87mm x 4.13mm x 2.46mm
USD 52.25
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ID: 3843451 pcs
1.16ct Tourmaline
16.40mm x 3.17mm x 2.42mm
USD 22.39
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ID: 4316001 pcs
0.42ct Opal
5.49mm x 3.20mm
USD 8.40
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ID: 3693651 pcs
3.79ct Fire Opal
11.50mm x 6.38mm
USD 122.91
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ID: 3816901 pcs
1.82ct Tourmaline
9.01mm x 6.65mm x 4.57mm
USD 97.79
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ID: 4199831 pcs
1.06ct Tourmaline
7.11mm x 5.20mm x 3.98mm
USD 74.20
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ID: 4157231 pcs
0.91ct Tourmaline
7.33mm x 4.20mm x 2.99mm
USD 21.98
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ID: 4142641 pcs
1.81ct Tourmaline
14.65mm x 4.25mm x 3.11mm
USD 44.22
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ID: 3147401 pcs
2.17ct Opal
11.78mm x 8.98mm x 5.96mm
USD 86.80
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ID: 4172691 pcs
1.33ct Tourmaline
8.09mm x 6.02mm x 4.60mm
USD 255.33
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ID: 3486851 pcs
8.17ct Fire Opal
23.31mm x 12.06mm x 7.64mm
USD 408.50
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ID: 4206181 pcs
10.21ct Opal Doublet
24.99mm x 14.11mm x 3.15mm
USD 163.36
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ID: 3495521 pcs
1.18ct Tourmaline
16.21mm x 2.97mm x 2.59mm
USD 25.96
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ID: 3908731 pcs
1.03ct Tourmaline
15.69mm x 3.49mm x 1.89mm
USD 22.66
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ID: 4016082 pcs
1.78ctw Tourmaline
7.37mm x 5.55mm x 3.43mm
USD 66.57
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ID: 3496411 pcs
1.20ct Tourmaline
14.00mm x 3.30mm x 2.46mm
USD 26.40
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ID: 3704011 pcs
2.58ct Fire Opal
11.66mm x 9.52mm x 6.33mm
USD 116.10
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ID: 4160691 pcs
1.65ct Tourmaline
20.50mm x 3.20mm x 2.46mm
USD 39.60
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October Birthstones
Opal and tourmaline are the birthstones for October, providing choices in every possible color. More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied a folklore. Opals are also the most delicate gems commonly worn. They require special care to ensure their health and longevity.

Tourmaline derives from the Sinhalese term "turamali", which translates as "stone of mixed colors". The very name refers to the unique spectrum of colors displayed by this gemstone, which is second to none in the realm of precious stones. One of the most versatile of gemstones, tourmaline is available in every color, from colorless to black. It can show every tone from pastel to dark, and can exhibit various colors in the same stone.

The astrological stone for Scorpio is beryl. Beryl is one of the most important mineral groups and also one of the biggest gemstone groups. Although the mineral is abundant, it rarely occurs in transparent gem-quality material. Transparent gem-quality beryl is referred to as 'precious beryl'. The most famous beryl gemstone is green emerald, followed by blue aquamarine. Golden beryl is not very well-known by the general public. Other popular beryl gems include pink 'morganite' and white, or colorless, 'goshenite'. Red beryl is the rarest variety of beryl and it is known in the trade as 'bixbite'.
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

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