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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1170): Color-Change Gems Color Change Garnet Gems, Color Change Sapphire, Alexandrite, Color-Change Diaspore, Color-Change Fluorite Clear All
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ID: 3883361 pcs
0.70ct Color-Change Diaspore
5.39 x 3.54mm
USD 22.97
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ID: 3447891 pcs
2.21ct Color-Change Garnet
10.98 x 7.05 x 4.34mm
USD 198.90
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ID: 3902731 pcs
1.06ct Color-Change Diaspore
7.47 x 4.47 x 3.20mm
USD 51.95
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ID: 4293261 pcs
0.87ct Color-Change Garnet
6.07 x 4.79 x 3.37mm
USD 52.20
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ID: 4368472 pcs
1.11ctw Color-Change Diaspore
4.94 x 3.58mm
USD 18.37
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ID: 3901161 pcs
1.26ct Color-Change Diaspore
9.19 x 5.01 x 4.15mm
USD 61.84
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ID: 3894071 pcs
0.56ct Color-Change Diaspore
5.39 x 4.36 x 3.24mm
USD 18.26
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ID: 4369131 pcs
0.45ct Color-Change Diaspore
5.26 x 2.23mm
USD 7.45
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ID: 2521191 pcs
0.51ct Color-Change Garnet
4.50 x 4.49 x 2.49mm
USD 48.20
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ID: 4369171 pcs
0.51ct Color-Change Diaspore
5.43 x 2.63mm
USD 8.44
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ID: 3964953 pcs
2.52ctw Color-Change Diaspore
5.39 x 5.24 x 3.77mm
USD 120.36
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ID: 4220731 pcs
1.44ct Color-Change Diaspore
11.89 x 5.13 x 3.55mm
USD 62.93
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ID: 4247681 pcs
0.67ct Color-Change Diaspore
5.37 x 4.03 x 3.42mm
USD 20.10
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ID: 4400301 pcs
1.00ct Color-Change Diaspore
6.81 x 4.62 x 3.15mm
USD 28.00
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ID: 4017287 pcs
2.20ctw Color-Change Sapphire
3.84 x 2.47mm
USD 165.00
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ID: 4245971 pcs
0.88ct Color-Change Diaspore
6.10 x 5.14 x 3.43mm
USD 26.40
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ID: 3463172 pcs
1.16ctw Color-Change Garnet
5.93 x 4.03 x 2.56mm
USD 104.40
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ID: 2600311 pcs
0.68ct Color-Change Garnet
7.07 x 3.57 x 2.62mm
USD 64.26
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ID: 4368522 pcs
1.47ctw Color-Change Diaspore
5.60 x 3.33mm
USD 24.33
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ID: 4373401 pcs
0.69ct Color-Change Diaspore
10.51 x 3.68 x 2.77mm
USD 11.42
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ID: 4227441 pcs
0.68ct Color-Change Diaspore
6.55 x 3.83 x 2.83mm
USD 19.75
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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