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Tipo di gemma Colore Forma Caratura Misura Trasparenza Prezzo Origine
La tua scelta (1229): Gemme cangianti - Color Change Garnet, Color Change Sapphire, Alexandrite, Color-Change Diaspore, Color-Change Fluorite Cancella tutto
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Violet to Blue Fluorite che cambia colore Gem - 10.9ct Sfaccettatura rotonda (ID: 413698)

Rotondo Multicolore Fluorite che cambia colore

10.9ct
14 mm
$ 272.50
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Marrone dorato ad arancione Granato cangiante Gem - 1.8ct Sfaccettatura a pera (ID: 344767)

Pera Multicolore Granato cangiante

1.8ct
10.5 x 6 mm
$ 159.30
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Green to Pink Diaspro cangiante Gem - 1.2ct Taglio a cuscino (ID: 396546)

Cuscino Multicolore Diaspro cangiante

1.2ct
8.2 x 5.1 mm
$ 58.74
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Green to Pink Diaspro cangiante Gem - 1.3ct Taglio a cuscino (ID: 451601)

Cuscino Multicolore Diaspro cangiante

1.31 ct (Totale 2.61ctw)
10.3 x 4.3 mm
$ 122.67
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Marrone dorato ad arancione Granato cangiante Gem - 3.8ct Ovale sfaccettato (ID: 344565)

Ovale Multicolore Granato cangiante

3.8ct
10.6 x 7.6 mm
$ 490.10
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Green to Pink Diaspro cangiante Gem - 1.3ct Taglio a cuscino (ID: 451657)

Cuscino Multicolore Diaspro cangiante

1.29 ct (Totale 2.57ctw)
7.9 x 5.1 mm
$ 120.79
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Green to Pink Diaspro cangiante Gem - 1.1ct Sfaccettatura a pera (ID: 451573)

Pera Multicolore Diaspro cangiante

1.11 ct (Totale 2.22ctw)
13.1 x 4.6 mm
$ 104.34
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Marrone verdastro a rosa rossa Granato cangiante Gem - 0.5ct Ovale sfaccettato (ID: 428860)

Ovale Multicolore Granato cangiante

0.49 ct (Totale 0.97ctw)
5.1 x 4 mm
$ 48.50
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Green to Pink Diaspro cangiante Gem - 1.8ct Baguette sfaccettata (ID: 398473)

Taglio a baguette Multicolore Diaspro cangiante

1.8ct
11 x 4.6 mm
$ 84.64
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Violet to Blue Fluorite che cambia colore Gem - 11.5ct Sfaccettatura rotonda (ID: 413715)

Rotondo Multicolore Fluorite che cambia colore

11.5ct
14 mm
$ 286.25
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Marrone dorato ad arancione Granato cangiante Gem - 1.5ct Ovale sfaccettato (ID: 344891)

Ovale Multicolore Granato cangiante

1.5ct
8 x 6.1 mm
$ 133.20
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Green to Pink Diaspro cangiante Gem - 3.3ct Sfaccettatura a pera (ID: 390227)

Pera Multicolore Diaspro cangiante

3.3ct
13.1 x 7.6 mm
$ 825.00
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Green to Pink Diaspro cangiante Gem - 1.5ct Taglio a cuscino (ID: 451605)

Cuscino Multicolore Diaspro cangiante

1.51 ct (Totale 3.01ctw)
11 x 4.7 mm
$ 141.47
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Green to Pink Diaspro cangiante Gem - 19.9ct Sfaccettatura rotonda (ID: 381559)

Rotondo Multicolore Diaspro cangiante

19.9ct
15.4 mm
$ 6,500.92
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Violet to Blue Fluorite che cambia colore Gem - 12.3ct Sfaccettatura rotonda (ID: 413680)

Rotondo Multicolore Fluorite che cambia colore

12.3ct
14.1 mm
$ 306.25
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Marrone dorato ad arancione Granato cangiante Gem - 2.4ct Sfaccettatura a pera (ID: 344766)

Pera Multicolore Granato cangiante

2.4ct
9.1 x 7.4 mm
$ 200.92
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Marrone dorato a rosa Granato cangiante Gem - 0.7ct Ottagono / taglio a forbice (ID: 238079)

Multicolore Granato cangiante

0.7ct
7.1 x 3.5 mm
$ 84.31
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Green to Pink Diaspro cangiante Gem - 0.5ct Sfaccettatura rotonda (ID: 454509)

Rotondo Multicolore Diaspro cangiante

0.48 ct (Totale 1.93ctw)
4.9 mm
$ 61.76
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Green to Pink Diaspro cangiante Gem - 6.7ct Taglio a cuscino (ID: 381560)

Cuscino Multicolore Diaspro cangiante

6.7ct
11.7 x 9.8 mm
$ 2,858.44
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Green to Pink Diaspro cangiante Gem - 1.5ct Taglio a cuscino (ID: 451571)

Cuscino Multicolore Diaspro cangiante

1.54 ct (Totale 3.08ctw)
10.9 x 4.4 mm
$ 144.76
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Marrone verdastro a rosa rossa Granato cangiante Gem - 0.6ct Ovale sfaccettato (ID: 429001)

Ovale Multicolore Granato cangiante

0.6ct
5.7 x 4.4 mm
$ 31.00
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Gemme cangianti
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.
Recensioni dei clienti verificati
Valutazione complessiva -> 10 star ratings
man their gems are pretty good, and the prices aren't to bad either, I like checking out hte gems on there website, beceause the pictures of the gems are taken pretty well, and you can see the table, and the facets.
Pubblicato da Spinach in March, 2019
Fonte: Bizrate
Valutazione complessiva -> 10 star ratings
I love gemselect and I have bought a fair amount from them. The only complaint I have is not being able to save gems. I have a lot of projects so i am in the market for a lot of different gems and it's so disappointing to have to delete them all just to purchase one or two that I have saved in my cart.
Pubblicato da S.Hicks in March, 2019
Fonte: Bizrate
Valutazione complessiva -> 10 star ratings
I always check this site because they have unique options.
Pubblicato da Lisa in February, 2019
Fonte: Bizrate
Valutazione complessiva -> 10 star ratings
Great website to navigate. Awesome Gem selection! Nice photos and discriptions for all of the gems for sale. You can find gems in all price ranges. Checkout was a breeze.
Pubblicato da Timmy in February, 2019
Fonte: Bizrate
Valutazione complessiva -> 10 star ratings
They had an extensive gemstone selection in all different cuts, sizes, and colors. They also had very good and workable prices. All of these aspects pulled me in as a customer.
Pubblicato da Josh in February, 2019
Fonte: Bizrate
Valutazione complessiva -> 9 star ratings
It all depend on the product I will receive and have it verified by my in law jewellers.
Pubblicato da Vodka in February, 2019
Fonte: Bizrate
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Dimensioni e peso

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