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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1008): Color-Change Gems Color Change Garnet Gems, Color Change Sapphire, Alexandrite, Color-Change Diaspore, Color-Change Fluorite Clear All
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ID: 3882351 pcs
0.90ct Color-Change Diaspore
6.20mm x 5.10mm x 4.09mm
USD 29.54
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ID: 3887041 pcs
1.07ct Color-Change Diaspore
6.57mm x 5.14mm x 4.42mm
USD 52.04
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ID: 4294841 pcs
1.34ct Color-Change Garnet
6.87mm x 5.24mm x 4.23mm
USD 80.40
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ID: 4248201 pcs
0.84ct Color-Change Diaspore
5.48mm x 5.08mm x 3.44mm
USD 25.20
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ID: 3974591 pcs
1.28ct Color-Change Diaspore
7.25mm x 5.29mm x 3.42mm
USD 61.04
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ID: 3882621 pcs
0.48ct Color-Change Diaspore
4.37mm x 3.26mm
USD 15.75
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ID: 3659461 pcs
3.78ct Color-Change Garnet
10.95mm x 7.26mm x 5.35mm
USD 491.40
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ID: 3900391 pcs
1.35ct Color-Change Diaspore
10.47mm x 3.67mm x 3.24mm
USD 66.26
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ID: 3898161 pcs
1.02ct Color-Change Diaspore
7.02mm x 4.24mm x 3.51mm
USD 50.06
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ID: 3964221 pcs
1.37ct Color-Change Diaspore
8.36mm x 5.89mm x 3.62mm
USD 65.43
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ID: 4017287 pcs
2.20ctw Color-Change Sapphire
3.84mm x 2.47mm
USD 165.00
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ID: 3956651 pcs
0.97ct Color-Change Diaspore
9.17mm x 4.25mm x 2.31mm
USD 46.26
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ID: 3900801 pcs
0.92ct Color-Change Diaspore
6.87mm x 5.53mm x 3.55mm
USD 45.15
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ID: 3966431 pcs
1.58ct Color-Change Diaspore
9.73mm x 4.99mm x 3.49mm
USD 75.46
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ID: 3893491 pcs
0.74ct Color-Change Diaspore
6.06mm x 4.02mm x 3.24mm
USD 24.13
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ID: 3974921 pcs
1.04ct Color-Change Diaspore
7.38mm x 4.98mm x 3.24mm
USD 49.60
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ID: 3964211 pcs
1.06ct Color-Change Diaspore
6.56mm x 5.33mm x 3.28mm
USD 50.63
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ID: 3885001 pcs
0.62ct Color-Change Diaspore
5.41mm x 3.32mm
USD 20.14
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ID: 4220721 pcs
1.36ct Color-Change Diaspore
10.12mm x 4.97mm x 3.76mm
USD 59.43
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ID: 4223711 pcs
1.75ct Color-Change Diaspore
11.84mm x 4.26mm x 3.25mm
USD 76.53
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ID: 3891481 pcs
0.72ct Color-Change Diaspore
6.98mm x 4.72mm x 2.93mm
USD 23.48
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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