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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (4896): 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: 2320141 pcs
1.27ct Tourmaline
6.97mm x 6.02mm x 4.73mm
USD 33.34
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ID: 3624181 pcs
2.82ct Tourmaline
24.98mm x 3.48mm x 3.02mm
USD 70.50
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ID: 4199841 pcs
1.22ct Tourmaline
6.49mm x 5.71mm x 4.86mm
USD 85.40
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ID: 4138361 pcs
2.15ct Tourmaline
9.08mm x 7.35mm x 4.94mm
USD 86.00
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ID: 3623351 pcs
2.10ct Tourmaline
25.09mm x 3.46mm x 2.38mm
USD 52.50
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ID: 3672284 pcs
2.29ctw Fire Opal
5.93mm x 3.81mm
USD 76.37
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ID: 4199431 pcs
0.83ct Tourmaline
6.72mm x 4.84mm x 3.51mm
USD 37.35
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ID: 4259751 pcs
0.72ct Tourmaline
5.78mm x 4.89mm x 3.51mm
USD 13.80
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ID: 3788711 pcs
0.72ct Tourmaline
7.00mm x 5.03mm x 3.31mm
USD 32.76
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ID: 3908811 pcs
1.22ct Tourmaline
12.92mm x 3.14mm x 3.00mm
USD 26.84
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ID: 3700631 pcs
1.66ct Tourmaline
18.48mm x 3.12mm x 2.87mm
USD 32.34
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ID: 3981341 pcs
1.93ct Tourmaline
19.10mm x 3.54mm x 2.82mm
USD 42.46
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ID: 4164241 pcs
2.33ct Tourmaline
18.63mm x 4.57mm x 2.51mm
USD 58.25
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ID: 3621461 pcs
46.83ct Tourmaline
28.85mm x 14.62mm x 12.12mm
USD 177.02
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ID: 2940562 pcs
1.08ctw Opal Doublet
7.13mm x 5.01mm x 1.98mm
USD 32.40
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ID: 3834221 pcs
0.97ct Fire Opal
8.15mm x 6.19mm x 4.21mm
USD 31.00
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ID: 3801061 pcs
12.90ct Fire Opal
19.77mm x 19.01mm x 7.94mm
USD 451.50
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ID: 4321051 pcs
0.57ct Opal
7.14mm x 5.56mm x 3.52mm
USD 15.96
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ID: 4293001 pcs
0.67ct Opal
7.79mm x 5.96mm x 3.00mm
USD 18.76
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ID: 4319131 pcs
0.60ct Opal
5.77mm x 4.18mm
USD 16.80
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ID: 3830871 pcs
10.70ct Fire Opal
23.02mm x 13.14mm x 7.59mm
USD 228.44
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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

Size Comparison Chart