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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (6261): Tanzanian Sapphire Gems Sapphire, Star Sapphire, Color Change Sapphire Clear All
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ID: 4453892 pcs
thumb image of 1.3ct Round Facet Yellow Golden Sapphire (ID: 445389)
1.29 ct Sapphire
4.9 mm
$ 64.71
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ID: 4534081 pcs
thumb image of 0.8ct Round Facet Orange Sapphire (ID: 453408)
0.81 ct Sapphire
5.1 mm
$ 47.31
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ID: 35428220 pcs
thumb image of 2.6ct Princess-Cut Green Sapphire (ID: 354282)
2.64 ct Sapphire
2.6 x 2.5 mm
$ 79.20
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ID: 4297832 pcs
thumb image of 0.8ct Marquise Facet Yellow Golden Sapphire (ID: 429783)
0.76 ct Sapphire
6.8 x 3.6 mm
$ 18.56
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ID: 4440471 pcs
thumb image of 0.7ct Oval Facet Red Orange Sapphire (ID: 444047)
0.74 ct Sapphire
5.8 x 5 mm
$ 36.77
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ID: 4438252 pcs
thumb image of 1.6ct Oval Facet Yellow Golden Sapphire (ID: 443825)
1.59 ct Sapphire
6 x 4.8 mm
$ 79.01
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ID: 40149220 pcs
thumb image of 4.1ct Marquise Facet Yellow Golden Sapphire (ID: 401492)
4.08 ct Sapphire
4.7 x 2.6 mm
$ 102.00
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ID: 4642896 pcs
thumb image of 0.8ct Octagon Step Cut Multicolor Sapphire (ID: 464289)
0.75 ct Sapphire
2.5 x 2.5 mm
$ 18.90
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ID: 4476791 pcs
thumb image of 1.3ct Pear Facet Pinkish Violet Sapphire (ID: 447679)
1.26 ct Sapphire
7.1 x 5.7 mm
$ 606.49
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ID: 4437862 pcs
thumb image of 1.2ct Round Facet Yellow Golden Sapphire (ID: 443786)
1.19 ct Sapphire
4.9 mm
$ 59.13
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ID: 41890620 pcs
thumb image of 1.3ct Diamond-Cut Multicolor Sapphire (ID: 418906)
1.31 ct Sapphire
2.4 mm
$ 45.85
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ID: 4477191 pcs
thumb image of 1.1ct Pear Facet Purple Sapphire (ID: 447719)
1.06 ct Sapphire
7.4 x 5.5 mm
$ 510.22
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ID: 41170010 pcs
thumb image of 1.9ct Princess-Cut Multicolor Sapphire (ID: 411700)
1.89 ct Sapphire
3.2 x 3.1 mm
$ 75.60
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ID: 4297852 pcs
thumb image of 0.8ct Marquise Facet Yellow Golden Sapphire (ID: 429785)
0.78 ct Sapphire
6.9 x 3.5 mm
$ 19.05
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ID: 4642996 pcs
thumb image of 0.8ct Octagon Step Cut Multicolor Sapphire (ID: 464299)
0.76 ct Sapphire
2.6 x 2.5 mm
$ 19.15
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ID: 4448211 pcs
thumb image of 0.6ct Heart Facet Pink Sapphire (ID: 444821)
0.55 ct Sapphire
5.3 x 5.3 mm
$ 66.31
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ID: 4606132 pcs
thumb image of 1.2ct Round Facet Yellow Golden Sapphire (ID: 460613)
1.16 ct Sapphire
4.8 mm
$ 69.66
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ID: 37996212 pcs
thumb image of 4.6ct Pear Facet Red Orange Sapphire (ID: 379962)
4.63 ct Sapphire
5.1 x 4.1 mm
$ 115.75
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ID: 4297442 pcs
thumb image of 0.8ct Marquise Facet Yellow Golden Sapphire (ID: 429744)
0.80 ct Sapphire
7 x 3.6 mm
$ 19.54
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ID: 4598941 pcs
thumb image of 0.9ct Oval Facet Green Sapphire (ID: 459894)
0.89 ct Sapphire
6.3 x 5.2 mm
$ 61.59
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ID: 4620776 pcs
thumb image of 1ct Marquise Facet Orange Sapphire (ID: 462077)
0.98 ct Sapphire
4.5 x 2.5 mm
$ 19.67
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Tanzanian Sapphire Gems
Tanzanian sapphire gems have proven to be very popular as of recent times. Many of the sapphires from Tanzania entering the market are untreated gems which are getting rarer and pricier every year. Tanzania is best known for tanzanite and rare tsavorite garnet, but over recent years, Tanzania has become one of the most dominant sources for gem-quality sapphire. Some Tanzanian material often exhibits a color-change property, typically shifting from violet to blue. The main limitation with unheated Tanzanian sapphire gems is that they are usually available only in smaller sizes, but many new Tanzanian mining sources have revealed much larger stones, often weighing 1-2 carats or more.

The Songea region of Tanzania is also becoming one the most important sources for fine fancy colored sapphire, particularly due to high levels of magnesium. It is the magnesium which results in a wide range of fancy sapphire colors. Many of the Songea sapphires respond very well to beryllium heat enhancement, producing some stunning colors. In fact, Tanzanian Songea sapphire gems have become so popular recently, that dealers trade them under names such as 'sunset ruby', but technically, they are not rubies at all since the colors are obtained through heat treatment with beryllium. In order to be ruby, it should be naturally red. In addition to Songea region, the Tunduru area near bordering Mozambique, is also a very well-known source for its quality sapphire deposits. Although there are many active sapphire mining areas in Tanzania already, most mining is still on a small scale, which means there is still much to see from Tanzania in the upcoming years.
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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