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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (6065): Tanzanian Sapphire Gems Sapphire, Star Sapphire, Color Change Sapphire Clear All
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ID: 4619941 pcs
thumb image of 1ct Round Facet Golden Yellow Sapphire (ID: 461994)
1.00 ct Sapphire
5.4 mm
$ 50.17
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ID: 4436642 pcs
thumb image of 1.1ct Round Facet Yellow Golden Sapphire (ID: 443664)
1.13 ct Sapphire
4.9 mm
$ 56.15
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ID: 4532781 pcs
thumb image of 0.7ct Round Facet Yellow Golden Sapphire (ID: 453278)
0.66 ct Sapphire
4.8 mm
$ 38.55
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ID: 4436122 pcs
thumb image of 1.2ct Oval Facet Yellow Golden Sapphire (ID: 443612)
1.23 ct Sapphire
6 x 4.9 mm
$ 61.12
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ID: 4613334 pcs
thumb image of 2.4ct Round Facet Yellow Sapphire (ID: 461333)
2.44 ct Sapphire
5 mm
$ 146.52
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ID: 42204810 pcs
thumb image of 2.6ct Oval Facet Purple Pink Sapphire (ID: 422048)
2.55 ct Sapphire
4.3 x 3.4 mm
$ 102.00
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ID: 4297122 pcs
thumb image of 0.9ct Marquise Facet Yellow Golden Sapphire (ID: 429712)
0.85 ct Sapphire
6.8 x 3.5 mm
$ 20.76
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ID: 4436062 pcs
thumb image of 1.3ct Oval Facet Yellow Golden Sapphire (ID: 443606)
1.29 ct Sapphire
6 x 5 mm
$ 64.10
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ID: 4297062 pcs
thumb image of 0.9ct Marquise Facet Yellow Golden Sapphire (ID: 429706)
0.88 ct Sapphire
6.9 x 3.6 mm
$ 21.49
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ID: 4619971 pcs
thumb image of 0.9ct Round Facet Yellow Golden Sapphire (ID: 461997)
0.87 ct Sapphire
5.3 mm
$ 43.65
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ID: 34720220 pcs
thumb image of 2.8ct Princess-Cut Multicolor Sapphire (ID: 347202)
2.79 ct Sapphire
2.7 x 2.7 mm
$ 69.75
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ID: 4619361 pcs
thumb image of 0.6ct Round Facet Golden Yellow Sapphire (ID: 461936)
0.61 ct Sapphire
4.9 mm
$ 30.60
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ID: 45251010 pcs
thumb image of 3ct Octagon Step Cut Pink Sapphire (ID: 452510)
2.95 ct Sapphire
4.1 x 3.1 mm
$ 118.00
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ID: 2898871 pcs
thumb image of 0.5ct Oval Facet Pinkish Purple Sapphire (ID: 289887)
0.52 ct Sapphire
5.9 x 4.2 mm
$ 72.25
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ID: 35042820 pcs
thumb image of 3.9ct Marquise Facet Red Orange Sapphire (ID: 350428)
3.87 ct Sapphire
5 x 2.6 mm
$ 96.75
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ID: 4297052 pcs
thumb image of 0.9ct Marquise Facet Yellow Golden Sapphire (ID: 429705)
0.92 ct Sapphire
6.8 x 3.6 mm
$ 22.47
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ID: 4485351 pcs
thumb image of 1.4ct Cushion-Cut Pinkish Violet Sapphire (ID: 448535)
1.38 ct Sapphire
7.1 x 5.3 mm
$ 665.16
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ID: 3999392 pcs
thumb image of 1.4ct Pear Facet Yellow Golden Sapphire (ID: 399939)
1.36 ct Sapphire
6.1 x 4.9 mm
$ 43.56
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ID: 42402210 pcs
thumb image of 2.2ct Diamond-Cut Yellow Orange Sapphire (ID: 424022)
2.18 ct Sapphire
3.7 mm
$ 78.48
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ID: 4641888 pcs
thumb image of 0.9ct Octagon Step Cut Multicolor Sapphire (ID: 464188)
0.90 ct Sapphire
2.6 x 2.5 mm
$ 22.68
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ID: 4613471 pcs
thumb image of 1ct Cushion-Cut Pink Sapphire (ID: 461347)
1.02 ct Sapphire
7 x 4.8 mm
$ 306.00
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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