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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1177): Color-Change Gems Color Change Garnet, Color Change Sapphire, Alexandrite, Color-Change Diaspore, Color-Change Fluorite Clear All
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ID: 3898581 pcs
thumb image of 0.7ct Round Facet Green/Pink Color-Change Diaspore (ID: 389858)
0.73ct Color-Change Diaspore
5.83 x 3.11mm
USD 23.89
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ID: 3885031 pcs
thumb image of 0.8ct Round Facet Green/Pink Color-Change Diaspore (ID: 388503)
0.77ct Color-Change Diaspore
5.70 x 3.36mm
USD 25.01
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ID: 4245941 pcs
thumb image of 0.8ct Pear Facet Green/Pink Color-Change Diaspore (ID: 424594)
0.78ct Color-Change Diaspore
7.63 x 4.69 x 3.39mm
USD 23.40
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ID: 4246971 pcs
thumb image of 0.8ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 424697)
0.80ct Color-Change Diaspore
6.46 x 5.11 x 2.96mm
USD 24.00
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ID: 3560791 pcs
thumb image of 0.6ct Oval Facet Golden Brown to Orange Color-Change Garnet (ID: 356079)
0.57ct Color-Change Garnet
6.05 x 4.01 x 2.69mm
USD 51.30
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ID: 4225471 pcs
thumb image of 1.3ct Baguette Facet Green/Pink Color-Change Diaspore (ID: 422547)
1.27ct Color-Change Diaspore
8.02 x 4.92 x 3.24mm
USD 55.54
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ID: 3899341 pcs
thumb image of 0.9ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 389934)
0.92ct Color-Change Diaspore
7.10 x 5.51 x 2.65mm
USD 30.10
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ID: 3984251 pcs
thumb image of 1.4ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 398425)
1.37ct Color-Change Diaspore
7.19 x 5.45 x 4.39mm
USD 65.14
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ID: 3974501 pcs
thumb image of 1.1ct Octagon Facet Green/Pink Color-Change Diaspore (ID: 397450)
1.11ct Color-Change Diaspore
6.47 x 4.94 x 3.48mm
USD 52.94
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ID: 4227951 pcs
thumb image of 0.8ct Octagon Facet Green/Pink Color-Change Diaspore (ID: 422795)
0.75ct Color-Change Diaspore
5.60 x 4.21 x 3.56mm
USD 21.79
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ID: 4404181 pcs
thumb image of 1ct Octagon Facet Green/Pink Color-Change Diaspore (ID: 440418)
0.95ct Color-Change Diaspore
6.40 x 5.77 x 2.89mm
USD 26.60
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ID: 3293751 pcs
thumb image of 1.1ct Cushion-Cut Greenish Brown to Orange Color-Change Garnet (ID: 329375)
1.14ct Color-Change Garnet
7.74 x 4.47 x 3.05mm
USD 102.60
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ID: 3457811 pcs
thumb image of 0.6ct Pear Facet Golden Brown to Orange Color-Change Garnet (ID: 345781)
0.64ct Color-Change Garnet
6.40 x 4.23 x 3.16mm
USD 57.60
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ID: 4228321 pcs
thumb image of 0.8ct Octagon Facet Green/Pink Color-Change Diaspore (ID: 422832)
0.84ct Color-Change Diaspore
8.22 x 3.29 x 2.99mm
USD 24.40
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ID: 2624171 pcs
thumb image of 0.6ct Octagon / Scissor Cut Golden Brown to Orange Color-Change Garnet (ID: 262417)
0.59ct Color-Change Garnet
7.01 x 3.41 x 2.30mm
USD 53.10
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ID: 3984241 pcs
thumb image of 1.8ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 398424)
1.75ct Color-Change Diaspore
9.96 x 5.37 x 3.69mm
USD 83.21
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ID: 3457932 pcs
thumb image of 1.3ct Pear Facet Golden Brown to Orange Color-Change Garnet (ID: 345793)
1.34ct Color-Change Garnet
5.97 x 4.14 x 3.67mm
USD 120.60
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ID: 3967601 pcs
thumb image of 1ct Oval Facet Green/Pink Color-Change Diaspore (ID: 396760)
1.04ct Color-Change Diaspore
8.22 x 4.49 x 3.56mm
USD 49.67
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ID: 3901201 pcs
thumb image of 1.1ct Marquise Facet Green/Pink Color-Change Diaspore (ID: 390120)
1.13ct Color-Change Diaspore
10.66 x 4.87 x 3.17mm
USD 55.46
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ID: 3947981 pcs
thumb image of 1.3ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 394798)
1.27ct Color-Change Diaspore
8.29 x 5.29 x 2.94mm
USD 47.29
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ID: 3967061 pcs
thumb image of 1.4ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 396706)
1.36ct Color-Change Diaspore
8.27 x 5.14 x 3.74mm
USD 64.95
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Color-Change Gems
There are various color change gems, which include color change garnet, color change diaspore, color change fluorite, color change sapphire and alexandrite.

Color-change garnet is a mix of spessartite and pyrope garnet. This garnet presents a color change from brownish in daylight to a rose pink in incandescent light. The color change is quite intense and dramatic, surpassing that of the more expensive alexandrite.

Alexandrite is one of the rarest of all colored gemstones and is famed for its color change from green in daylight to red under incandescent light. Fine faceted alexandrite over 1 carat is more valuable than sapphire, ruby or emerald. Alexandrite is a variety of chrysoberyl, with an excellent hardness of 8.5 on the Mohs scale, placing it right behind sapphire and ruby. Alexandrite is rare because of its chemical composition. Chrysoberyl is colored by traces of iron and titanium, but alexandrite is also colored by chromium, which gives it the emerald green hue in daylight.

Diaspore, sometimes marketed under the name Zultanite, is a color change gem from Turkey recently introduced to the international market. Diaspore is a hydrated aluminum oxide colored by manganese. It was first faceted as a gemstone in the 1980s, but was not commercially mined until recently. With reasonably good hardness (6.5 to 7 on the Mohs scale) and good brilliance, diaspore has been attracting considerable attention in the gem world. Under natural or fluorescent light, diapsore has a kiwi green color, with flashes of yellow. Diaspore displays a champagne color under incandescent lighting, and when exposed to subdued lighting, such as candlelight, it has a pinkish color. The larger the stone, the more pronounced the color change effect will be.

Color change fluorite is fluorite which exhibits a change of color under different lighting conditions; most often from blue under daylight, to purple under incandescent light. Fluorite is composed of calcium fluoride and is known for its many different colors. Some of the rarer fluorite colors prized by collectors are colorless and blue fluorite. Color change fluorite gems are typically faceted and available in a variety of shapes. As well as some fluorite stones possessing the optical phenomenon of color change, fluorite glows when heated and fluoresces under ultraviolet light. With a hardness rating of 4 on the Mohs scale, fluorite is a soft stone that should only be used for pendants, brooches or earrings. Fluorite is a very affordable and attractive gem. The origin of the word fluorite comes from the Latin verb to flow. Ancient Romans believed that drinking alcoholic beverages from vessels carved of fluorite prevented drunkenness.

Some rare sapphires exhibit a color change under varying lighting conditions. Color change sapphires are typically blue in natural light and purple under incandescent indoor light. Color changes may also be pink in daylight to greenish under fluorescent light. Some stones shift color well and others only partially, in that some stones go from blue to bluish purple.

To find the color change gemstones you seek, filter the results further by using the left-hand menu. You can buy color change gems by gem type, color and shape. By using the top menu, you can search by carat weight, size, price and other factors, to enable you to find the exact color change gems that you are looking for. All items are in stock and ready to be shipped.
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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