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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1151): Color-Change Gems Color Change Garnet Gems, Color Change Sapphire, Alexandrite, Color-Change Diaspore, Color-Change Fluorite Clear All
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ID: 4245981 pcs
0.82ct Color-Change Diaspore
7.14mm x 4.41mm x 2.83mm
USD 24.60
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ID: 3907091 pcs
0.86ct Color-Change Diaspore
6.81mm x 5.07mm x 3.50mm
USD 20.50
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ID: 4372831 pcs
0.81ct Color-Change Diaspore
5.87mm x 3.68mm
USD 13.41
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ID: 4227911 pcs
0.72ct Color-Change Diaspore
6.89mm x 3.57mm x 3.18mm
USD 20.92
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ID: 3948601 pcs
1.58ct Color-Change Diaspore
7.91mm x 6.62mm x 3.28mm
USD 58.84
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ID: 3954121 pcs
1.29ct Color-Change Diaspore
6.09mm x 4.79mm
USD 61.52
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ID: 3921931 pcs
1.31ct Color-Change Diaspore
8.01mm x 5.29mm x 3.62mm
USD 63.22
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ID: 4368472 pcs
1.11ctw Color-Change Diaspore
4.94mm x 3.58mm
USD 18.37
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ID: 3277811 pcs
0.71ct Color-Change Garnet
6.08mm x 4.15mm x 3.02mm
USD 63.90
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ID: 3970231 pcs
1.17ct Color-Change Diaspore
10.12mm x 4.16mm x 2.68mm
USD 55.88
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ID: 3947961 pcs
1.21ct Color-Change Diaspore
7.50mm x 5.10mm x 3.13mm
USD 45.06
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ID: 3886401 pcs
1.22ct Color-Change Diaspore
9.14mm x 5.63mm x 3.76mm
USD 59.34
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ID: 4246481 pcs
0.91ct Color-Change Diaspore
6.29mm x 5.60mm x 3.09mm
USD 27.30
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ID: 4248411 pcs
0.80ct Color-Change Diaspore
7.29mm x 4.48mm x 2.44mm
USD 24.00
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ID: 3939961 pcs
1.03ct Color-Change Diaspore
6.27mm x 5.07mm x 3.74mm
USD 38.84
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ID: 3965491 pcs
1.09ct Color-Change Diaspore
6.97mm x 4.86mm x 3.59mm
USD 52.06
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ID: 3889931 pcs
0.99ct Color-Change Diaspore
7.32mm x 5.23mm x 2.81mm
USD 48.15
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ID: 3974831 pcs
0.91ct Color-Change Diaspore
5.84mm x 5.64mm x 3.00mm
USD 43.40
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ID: 3966501 pcs
1.28ct Color-Change Diaspore
8.04mm x 5.38mm x 2.96mm
USD 61.13
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ID: 4397371 pcs
0.96ct Color-Change Diaspore
6.17mm x 4.44mm x 3.58mm
USD 26.88
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ID: 4296251 pcs
0.67ct Color-Change Garnet
6.20mm x 4.24mm x 2.96mm
USD 33.50
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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