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Tsarstone collectors guide

Certified Natural Alexandrite Oval 1.85cts.

Bright green in daylight and grayish purple under incandescent light, the color change is excellent. The stone is eye clean and the cutting and proportions are good. A complimentary AIGS gemstone mini certificate is included with the purchase of this gemstone.

Certified Natural Alexandrite Oval 1.85cts.
Natural Alexandrite Oval 1.85 cts Natural Alexandrite Oval 1.85 cts

Grade Score 8 / 10

Very good (4/5)
Exceptional (5/5)
Large (4/5)
Exceptional (5/5)
Rare (4/5)

Price information

Availability information

  • Offered through
  • Usually ships within 24 hours
  • Source:
  • Multicolour Gems Co., Ltd
Detail identification and grading report
Type: Natural
Species: Chrysoberyl
Variety: Alexandrite
Origin: Tunduru, Ruvuma, Ruvuma Region, Tanzania
Hardness: 8.5
Density: 3.75
RI-1: 1.741
RI-2: 1.76
Variety of work: Faceted
Designation: A (Not currently known to be enhanced)
Color light source: Cool daylight
Color description: G*5/2 (medium green)
Phenomena: Pleochroism Change of color (Alexandrite effect) Strong
Color phenomena: RO/OR*4/2 (medium light red-orange or orange red [pink])
Clarity type: Eye clean (Type I)
Transparency: Transparent
Shape: Oval
Cut style: Step
Symmetry: Exceptional
Brilliance: Exceptional
Polish: Exceptional
Width: 6.38 mm
Length: 8.79 mm
Depth: 3.86 mm
Weight: 1.85 cts
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