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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (6287): Tanzanian Sapphire Gems Sapphire, Star Sapphire, Color Change Sapphire Clear All
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ID: 4680171 pcs
thumb image of 1ct Round Facet Yellow Sapphire (ID: 468017)
0.96 ct Sapphire
5.5 mm
$ 110.32
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ID: 34803120 pcs
thumb image of 2ct Princess-Cut Yellow Golden Sapphire (ID: 348031)
2.02 ct Sapphire
2.6 x 2.5 mm
$ 46.46
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ID: 2452011 pcs
thumb image of 0.2ct Baguette Facet Yellow Orange Sapphire (ID: 245201)
0.24 ct Sapphire
4 x 3 mm
$ 17.16
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ID: 4600541 pcs
thumb image of 0.8ct Oval Facet Green Sapphire (ID: 460054)
0.80 ct Sapphire
5.9 x 4.9 mm
$ 55.36
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ID: 4463322 pcs
thumb image of 1.1ct Round Facet Orange Sapphire (ID: 446332)
1.14 ct Sapphire
4.9 mm
$ 56.95
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ID: 35014220 pcs
thumb image of 3.1ct Marquise Facet Red Orange Sapphire (ID: 350142)
3.11 ct Sapphire
4.7 x 2.5 mm
$ 77.75
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ID: 4533561 pcs
thumb image of 0.8ct Round Facet Yellow Golden Sapphire (ID: 453356)
0.76 ct Sapphire
5.1 mm
$ 44.39
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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: 4530121 pcs
thumb image of 1.4ct Oval Facet Reddish Orange Sapphire (ID: 453012)
1.44 ct Sapphire
7.8 x 6 mm
$ 210.28
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ID: 4445612 pcs
thumb image of 1.3ct Oval Facet Golden Yellow Sapphire (ID: 444561)
1.33 ct Sapphire
5.8 x 5 mm
$ 66.81
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ID: 4641828 pcs
thumb image of 1.3ct Octagon Step Cut Multicolor Sapphire (ID: 464182)
1.29 ct Sapphire
2.6 x 2.6 mm
$ 32.51
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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: 4439711 pcs
thumb image of 0.8ct Round Facet Yellow Orange Sapphire (ID: 443971)
0.80 ct Sapphire
5 mm
$ 39.75
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ID: 3902139 pcs
thumb image of 2.3ct Oval Facet Multicolor Sapphire (ID: 390213)
2.28 ct Sapphire
5 x 3.2 mm
$ 74.60
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ID: 4532091 pcs
thumb image of 0.8ct Round Facet Yellow Golden Sapphire (ID: 453209)
0.78 ct Sapphire
5.1 mm
$ 45.56
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ID: 4598152 pcs
thumb image of 1.5ct Oval Facet Green Sapphire (ID: 459815)
1.49 ct Sapphire
6 x 4.9 mm
$ 103.11
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ID: 4297072 pcs
thumb image of 0.8ct Marquise Facet Yellow Golden Sapphire (ID: 429707)
0.82 ct Sapphire
7.1 x 3.5 mm
$ 20.02
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ID: 4485331 pcs
thumb image of 1.2ct Cushion-Cut Pinkish Purple Sapphire (ID: 448533)
1.16 ct Sapphire
6.5 x 4.8 mm
$ 559.12
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ID: 3307756 pcs
thumb image of 1.4ct Octagon / Scissor Cut Multicolor Sapphire (ID: 330775)
1.36 ct Sapphire
4 x 2.8 mm
$ 47.60
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ID: 4477741 pcs
thumb image of 1ct Cushion-Cut Pinkish Violet Sapphire (ID: 447774)
1.03 ct Sapphire
6.7 x 5.2 mm
$ 495.78
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ID: 4446312 pcs
thumb image of 1.3ct Oval Facet Golden Yellow Sapphire (ID: 444631)
1.32 ct Sapphire
6 x 4.9 mm
$ 66.30
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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