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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (4423): 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: 3496481 pcs
thumb image of 1.7ct Octagon Facet Green Tourmaline (ID: 349648)
1.66ct Tourmaline
17.97 x 3.29 x 2.67mm
USD 36.52
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ID: 4163661 pcs
thumb image of 1.2ct Octagon Facet Green Tourmaline (ID: 416366)
1.20ct Tourmaline
12.28 x 4.31 x 2.22mm
USD 28.80
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ID: 4159991 pcs
thumb image of 1ct Octagon Facet Green Tourmaline (ID: 415999)
1.03ct Tourmaline
20.42 x 2.25 x 2.29mm
USD 24.72
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ID: 3842571 pcs
thumb image of 1ct Octagon Facet Green Tourmaline (ID: 384257)
1.02ct Tourmaline
11.40 x 3.42 x 2.74mm
USD 19.69
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ID: 3814901 pcs
thumb image of 2ct Octagon Facet Green Tourmaline (ID: 381490)
2.03ct Tourmaline
22.15 x 3.14 x 2.77mm
USD 50.75
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ID: 4316081 pcs
thumb image of 2.4ct Oval Facet Orange Fire Opal (ID: 431608)
2.39ct Fire Opal
14.45 x 9.05 x 4.60mm
USD 83.53
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ID: 4162721 pcs
thumb image of 1ct Octagon Facet Green Tourmaline (ID: 416272)
1.01ct Tourmaline
17.65 x 2.85 x 2.11mm
USD 24.24
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ID: 4377711 pcs
thumb image of 1.5ct Octagon Facet Green Tourmaline (ID: 437771)
1.50ct Tourmaline
18.51 x 3.49 x 2.23mm
USD 37.50
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ID: 4172381 pcs
thumb image of 2ct Pear Facet Purple Rose Tourmaline (ID: 417238)
2.03ct Tourmaline
10.80 x 6.41 x 5.27mm
USD 243.60
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ID: 3303084 pcs
thumb image of 4.2ct Oval Cabochon Multicolor Chocolate Opal (ID: 330308)
4.20ct Chocolate Opal
8.05 x 6.10 x 4.38mm
USD 126.00
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ID: 4172591 pcs
thumb image of 1.2ct Pear Facet Purple Pink Tourmaline (ID: 417259)
1.15ct Tourmaline
8.22 x 5.95 x 4.33mm
USD 115.00
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ID: 3833781 pcs
thumb image of 0.9ct Oval Facet Reddish Orange Fire Opal (ID: 383378)
0.85ct Fire Opal
7.25 x 6.21 x 4.06mm
USD 27.17
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ID: 3816861 pcs
thumb image of 1ct Oval Facet Green Tourmaline (ID: 381686)
0.98ct Tourmaline
7.76 x 5.84 x 3.40mm
USD 52.66
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ID: 4206321 pcs
thumb image of 8.8ct Oval Cabochon Multicolor Boulder Opal (ID: 420632)
8.77ct Boulder Opal
14.13 x 11.34 x 6.69mm
USD 52.62
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ID: 4172081 pcs
thumb image of 3.1ct Oval Facet Pink Tourmaline (ID: 417208)
3.14ct Tourmaline
10.76 x 8.44 x 5.54mm
USD 376.80
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ID: 4160061 pcs
thumb image of 2.5ct Octagon Facet Green Tourmaline (ID: 416006)
2.52ct Tourmaline
23.77 x 3.64 x 2.81mm
USD 63.00
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ID: 3355946 pcs
thumb image of 1.9ct Briolette with Hole Yellowish Green Tourmaline (ID: 335594)
1.92ct Tourmaline
4.90 x 3.08mm
USD 30.72
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ID: 3362496 pcs
thumb image of 1.3ct Trillion Facet Multicolor Tourmaline (ID: 336249)
1.34ct Tourmaline
4.12 x 4.08 x 2.34mm
USD 29.55
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ID: 3792924 pcs
thumb image of 1.8ct Oval Facet Yellow Golden Tourmaline (ID: 379292)
1.78ct Tourmaline
5.92 x 4.03 x 2.81mm
USD 80.76
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ID: 4073591 pcs
thumb image of 4.6ct Octagon / Scissor Cut Yellow Orange Fire Opal (ID: 407359)
4.62ct Fire Opal
11.13 x 10.90 x 7.32mm
USD 71.84
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ID: 2569844 pcs
thumb image of 3.4ct Oval Facet Green Tourmaline (ID: 256984)
3.42ct Tourmaline
6.60 x 5.09 x 3.69mm
USD 67.50
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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