One of the most expensive gemstones, Alexandrite has a wide range of colors (emerald green, orange-yellow, and red) and has a tendency to change colors in different forms of light. Emerald green in daylight will change to red when exposed to incandescent light.
 

Alexandrite is the birthstone of Modern: June and Traditional: June
 
Properties of Alexandrite:
Hardness:  8.5
Specific Gravity:  3.71-3.74
Refractive Index:  1.745-1.757
Chemical Composition:  BeAl2O4
Crystal Structure:  Orthorhombic
Treatment: Generally is not enhanced
Care: Normal care should be fine
30.05CTS. ALEXANDRITE COLOR CHANGE OVAL LOOSE GEMSTONE
30.05CTS. ALEXANDRITE COLOR CHANGE OVAL LOOSE GEMSTONE
$4.99 (1 Bids)
Time Left: 15m
24.00CTS.LUSTER ALEXANDRITE COLOR CHANGE OVAL LOOSE GEM
24.00CTS.LUSTER ALEXANDRITE COLOR CHANGE OVAL LOOSE GEM
$5.50 (3 Bids)
Time Left: 33m
Steal of the day !!    1.50 ct. CZOCHRALSKI ALEXANDRITE
Steal of the day !! 1.50 ct. CZOCHRALSKI ALEXANDRITE
$4.25
Time Left: 50m
AMAZING GREEN 2 PURPLE CHANGE NATURAL ALEXANDRITE C.EYE
AMAZING GREEN 2 PURPLE CHANGE NATURAL ALEXANDRITE C.EYE
$9.99 (0 Bids)
Time Left: 59m
14.20CTS.LUSTER ALEXANDRITE COLOR CHANGE TRILLION GEM
14.20CTS.LUSTER ALEXANDRITE COLOR CHANGE TRILLION GEM
$2.99 (0 Bids)
Time Left: 1h 3m
16.63 CT AMAZING! EMERALD CUT CZOCHRALSKI ALEXANDRITE.
16.63 CT AMAZING! EMERALD CUT CZOCHRALSKI ALEXANDRITE.
$5.99 (0 Bids)
Time Left: 1h 31m
33.40CTS.LUSTER ALEXANDRITE COLOR CHANGE OVAL GEMSTONE
33.40CTS.LUSTER ALEXANDRITE COLOR CHANGE OVAL GEMSTONE
$5.59 (1 Bids)
Time Left: 1h 41m
27.65CTS.LUSTER ALEXANDRITE COLOR CHANGE OCTAGON GEM
27.65CTS.LUSTER ALEXANDRITE COLOR CHANGE OCTAGON GEM
$4.99 (0 Bids)
Time Left: 2h 2m
1.95ct.EXCELLENT NATURAL CROWN ALEXANDRITE OVAL GEM
1.95ct.EXCELLENT NATURAL CROWN ALEXANDRITE OVAL GEM
$0.99 (1 Bids)
Time Left: 2h 3m
2.15ct. RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
2.15ct. RARE NATURAL CROWN RUSSIAN ALEXANDRITE OVAL GEM
$9.99 (1 Bids)
Time Left: 2h 8m
23.50CTS.LUSTER ALEXANDRITE COLOR CHANGE OVAL LOOSE GEM
23.50CTS.LUSTER ALEXANDRITE COLOR CHANGE OVAL LOOSE GEM
$3.99 (0 Bids)
Time Left: 2h 21m
12.40ct. AAA COLOR CHANGE CZOCHRALSKI ALEXANDRITE GEM
12.40ct. AAA COLOR CHANGE CZOCHRALSKI ALEXANDRITE GEM
$0.99 (1 Bids)
Time Left: 2h 22m
23.20ct. AAA COLOR CHANGE CZOCHRALSKI ALEXANDRITE GEM
23.20ct. AAA COLOR CHANGE CZOCHRALSKI ALEXANDRITE GEM
$6.51 (2 Bids)
Time Left: 2h 39m
26.65ct. HUGE COLOR CHANGE CZOCHRALSKI ALEXANDRITE GEM
26.65ct. HUGE COLOR CHANGE CZOCHRALSKI ALEXANDRITE GEM
$5.99 (1 Bids)
Time Left: 2h 46m
2.25Cts.AWESOME NATURAL CROWN ALEXANDRITE OVAL GEMSTONE
2.25Cts.AWESOME NATURAL CROWN ALEXANDRITE OVAL GEMSTONE
$0.99 (0 Bids)
Time Left: 2h 57m


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