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Brazilian alexandrite (daylight at left; incandescent at right), emerald cut, 3.18 ct, 9.06 x 7.23 x 5.1 mm.

With an ability to change its color Alexandrite is a very unique and beautiful gemstone. Green or bluish-green in daylight, alexandrite turns a soft shade of red, purplish-red or raspberry red in incandescent light.

Alexandrite is a stone of prosperity and longevity. It balances mind and emotions, pacifies soul and promotes spiritual growth. Alexandrite is a rare mineral variety ofAlexandrite Chrysoberyl. In the daylight it is of bluish-green or even emerald-green color, and in the artificial light it may be red, crimson, purple-red and violet-red.

Alexandrite the real birthstone for June. Good luck finding one that's real!

Os 10 materiais mais caros do mundo

Os 10 materiais mais caros do mundo

TAAFFEITE, pronounced TAR-fite, is named after Bohemian-Irish gemologist Richard Taaffe who discovered the first one from a box of Sri Lankan spinels in The stone displayed a double refraction which was uncharacteristic of spinel.

Lucky are the ladies born in June as they have two different Birthstones to choose from, Pearl and Alexandrite.  In addition, Pearls are the Anniversary Gemstone for the 3rd & 30th year and Alexandrite for the 55th year.

Lucky are the ladies born in June as they have two different Birthstones to choose from, Pearl and Alexandrite. In addition, Pearls are the Anniversary Gemstone for the & year and Alexandrite for the year.

Gemstone

Gemstone

According to legend, Vikings used iolite slices to reduce glare when checking the sun’s position.

Iolite gemstone is the gem-quality variety of the mineral cordierite.

Everyone knows diamonds are a girl’s best friend for their beauty and purported rarity, however we also know that their supposed scarcity as a mineral is somewhat false (its supply on the mar…

Everyone knows diamonds are a girl’s best friend for their beauty and purported rarity, however we also know that their supposed scarcity as a mineral is somewhat false (its supply on the mar…

swiss Blue Topaz

swiss Blue Topaz

Pulled synthetic alexandrite, Fig. 20.: Czochralski or pulled alexandrite looks very clean, but contains curved striations visible with magnification and stone color is bluish under the daylight

Czochralski or pulled alexandrite looks very clean, but contains curved striations visible with magnification and stone color is bluish under the daylight

2013 AGTA Cutting Edge Awards: All Other Faceted Gemstones - 1st Place: Ben Kho, Kho International, Inc. - 16.02 ct. fancy trillion Rhodochrosite.

fancy trillion Rhodochrosite 2013 AGTA Cutting Edge Awards: All Other Faceted Gemstones - Place: Ben Kho, Kho International, Inc.

square cushion tanzanite, pale specimen, but great fire.  Tanzanite is know for it's display of  three colors, purple, blue, reds

square cushion tanzanite, pale specimen, but great fire. Tanzanite is know for…

Named after American geologist Benjamin Silliman, Sillimanite is brown, pale green, or a white glassy silicate mineral that often occurs in long, slender, needlelike crystals frequently found in fibrous aggregates.  #fibrolite #sillimanite #gemstones.   Sillimanite is relatively hard, measuring between and 6 and 8 on the Mohs scale of hardness, and like Kyanite, has a brittleness and directional cleavage that makes it difficult to cut.

Sillimanite - Gemstone quality Sillimanite is somewhat rare and relatively expensive

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