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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1498): Color-Change Gems Color Change Garnet, Color Change Sapphire, Alexandrite, Color-Change Diaspore, Color-Change Fluorite Clear All
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ID: 4247651 pcs
thumb image of 0.8ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 424765)
0.78 ct Color-Change Diaspore
5.9 x 4.9 mm
$ 23.40
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ID: 4545064 pcs
thumb image of 1.2ct Round Facet Green/Pink Color-Change Diaspore (ID: 454506)
1.21 ct Color-Change Diaspore
4.1 mm
$ 38.72
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ID: 3832741 pcs
thumb image of 19.7ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 383274)
19.71 ct Color-Change Diaspore
18.9 x 12.3 mm
$ 6732.77
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ID: 4369171 pcs
thumb image of 0.5ct Round Facet Green/Pink Color-Change Diaspore (ID: 436917)
0.51 ct Color-Change Diaspore
5.4 mm
$ 8.44
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ID: 3883441 pcs
thumb image of 0.7ct Round Facet Green/Pink Color-Change Diaspore (ID: 388344)
0.67 ct Color-Change Diaspore
5.3 mm
$ 21.99
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ID: 4545084 pcs
thumb image of 1.5ct Round Facet Green/Pink Color-Change Diaspore (ID: 454508)
1.45 ct Color-Change Diaspore
4.1 mm
$ 46.40
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ID: 3815591 pcs
thumb image of 19.9ct Round Facet Green/Pink Color-Change Diaspore (ID: 381559)
19.90 ct Color-Change Diaspore
15.4 mm
$ 6500.92
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ID: 4375561 pcs
thumb image of 0.5ct Princess-Cut Green/Pink Color-Change Diaspore (ID: 437556)
0.53 ct Color-Change Diaspore
4.8 x 4.7 mm
$ 8.77
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ID: 3898001 pcs
thumb image of 0.9ct Oval Facet Green/Pink Color-Change Diaspore (ID: 389800)
0.89 ct Color-Change Diaspore
7 x 4.5 mm
$ 29.12
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ID: 4546004 pcs
thumb image of 1.9ct Round Facet Green/Pink Color-Change Diaspore (ID: 454600)
1.93 ct Color-Change Diaspore
4.7 mm
$ 61.76
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ID: 4454141 pcs
thumb image of 18.8ct Oval Checkerboard Violet-Blue Color-Change Fluorite (ID: 445414)
18.83 ct Color-Change Fluorite
19.8 x 15 mm
$ 472.26
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ID: 3815621 pcs
thumb image of 10.8ct Oval Facet Green/Pink Color-Change Diaspore (ID: 381562)
10.84 ct Color-Change Diaspore
14.7 x 12.4 mm
$ 3727.57
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ID: 4524001 pcs
thumb image of 0.3ct Round Facet Green/Pink Color-Change Diaspore (ID: 452400)
0.27 ct Color-Change Diaspore
4 mm
$ 9.45
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ID: 4295771 pcs
thumb image of 0.4ct Pear Facet Greenish Brown To Red Pink Color-Change Garnet (ID: 429577)
0.42 ct Color-Change Garnet
5.3 x 4 mm
$ 21.00
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ID: 4542521 pcs
thumb image of 0.6ct Round Facet Green/Pink Color-Change Diaspore (ID: 454252)
0.60 ct Color-Change Diaspore
4.9 mm
$ 19.20
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ID: 3905674 pcs
thumb image of 2.4ct Round Facet Green/Pink Color-Change Diaspore (ID: 390567)
2.36 ct Color-Change Diaspore
5.5 mm
$ 56.26
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ID: 3815601 pcs
thumb image of 6.7ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 381560)
6.65 ct Color-Change Diaspore
11.7 x 9.8 mm
$ 2858.44
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ID: 4446731 pcs
thumb image of 0.5ct Oval Facet Green to Red-Pink Color-Change Garnet (ID: 444673)
0.53 ct Color-Change Garnet
5 x 4.4 mm
$ 21.30
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ID: 4371731 pcs
thumb image of 0.6ct Marquise Facet Green/Pink Color-Change Diaspore (ID: 437173)
0.63 ct Color-Change Diaspore
9.8 x 3.7 mm
$ 10.43
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ID: 2624161 pcs
thumb image of 0.6ct Octagon / Scissor Cut Golden Brown to Orange Color-Change Garnet (ID: 262416)
0.61 ct Color-Change Garnet
7 x 3.5 mm
$ 60.39
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ID: 4144071 pcs
thumb image of 10ct Round Facet Violet-Blue Color-Change Fluorite (ID: 414407)
9.98 ct Color-Change Fluorite
13.8 mm
$ 199.60
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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