Min .15ct Mm Varies Round Alexandrite Item: 65RM0153B
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Product Description for Min .15ct Mm Varies Round AlexandriteAlexandrite is a phenomenal gem known as "emerald by day, ruby by night" because it changes color from green in fluorescent and daylight to red in incandescent light. Ranking 8.5 on Mohs' scale, it's ideal for daily wear. Discovered in 1830 in emerald mines of Russia's Ural Mountains, it was named for Czar Alexander II. Found in Brazil, Sri Lanka, and Tanzania, alexandrite only forms when aluminum/beryllium and chrome (which rarely occurs in nature) come together, accounting for its rarity.
Product Information for Min .15ct Mm Varies Round Alexandrite
| Product Type: | Single Stone |
Primary Stone / Alexandrite
| Shape: | Round | Composition: | Natural |
| Cut: | Mixed Cuts | Treatment: | Untreated |
| Color: | Green | Gemstone Group: | Chrysoberyl |
| Clarity: | Vs | Origin: | Brazil |
| Dimensions: | Mixed Uncalibrated | Origin: | Brazil |
| Count: | 1.00 |
| Customer Rating |
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5
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2 of 2 (100%) customers would recommend this product to a friend. |
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5
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Fabulous Alexandrite,
March 18, 2008
TexasGirl62
, Texas
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"I had been trying since my daughter's birth almost five years ago to purchase a natural Alexandrite, which is her birthstone.
This stone, though tiny (as expected), shows a clear color change and is free of inclusions, at least to the naked eye.
I am very excited to have made this purchase and plan to add to my daughter's Alexandrite collection in the future."
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Product met expectations:
Yes
Purchased as a gift:
Yes
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1 of 1 people found this review helpful.
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 home learning library alexandrite
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Fast Facts
| A member of the Chrysoberyl family, alexandrite holds a prized and highly priced position among jewelry and gem collectors. |
| A color change stone, alexandrite can appear green in daylight and change to a raspberry color in incandescent light, but other color changes are also highly prized. |
| Alexandrite was discovered in 1830 in the Ural Mountains on the day Czar Alexander II came of age, and thus the stones were named in his honor. |
 The primary sources for alexandrite are Sri Lanka, Brazil, Burma (Myanmar), Madagascar and Russia.
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Alexandrite is a highly prized variety of chrysoberyl. Alexandrite only forms when aluminum/beryllium and chrome (which rarely occurs in nature) come together, accounting for its rarity. On Mohs’ scale of hardness, alexandrite is 8.5. It has a strong vitreous luster and primary sources include Sri Lanka, Zimbabwe, and Brazil (Minas Gerais).
Color
Alexandrite is typically found in blue, blue-green, and brownish-green shades. However, this phenomenal gem is known as "emerald by day, ruby by night" because of its ability to change color, depending on the type of light in which it's viewed. In the daylight and fluorescent light, alexandrite appears in shades of blue and green, but in tungsten (incandescent) light, it appears in shades of red. Other alexandrite color changes are possible (from blue to purple, from greenish blue to reddish blue, from brownish-green to brownish-red, etc.) and also highly prized.
   
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