TANZANITES - 5.35 CARATS - PURPLISH BLUE

Quantity: 3 Pcs
Report Number: 2700065
Clarity: Included; All Stones Exhibit Visible Inclusions Under Magnification And In Some Cases To The Unaided Eye.
Measurements: Mixed Sizes
Treatments: Evidence Suggests Heat Treatment, Which Is Standard Practice For Enhancing Tanzanite'S Color.
Origin: Not Reported
Refractive Index: Approx. 1.69 – 1.70 (Typical For Tanzanite)
Specific Gravity: Approx. 3.35
Spectroscope Analysis: Characteristic Absorption Features Observed In The Red And Yellow Regions, Consistent With Natural Tanzanite.
Fluorescence: Weak To Moderate Bluish Or Violet Fluorescence Under Longwave Uv Light; Inert To Shortwave Uv In Most Specimens.
Comments: This Lot Includes 3 Natural Tanzanite Stones With Octagon Cuts And Mixed Sizes. The Stones Display Purplish Blue Hues, With Noticeable Pleochroism (Color Shift) Under Different Lighting Directions. Inclusions Are Visible Under Magnification And Contribute To Their Natural Origin. Color And Clarity Are Consistent With Tanzanite Typically Subjected To Heat Treatment.



Conclusion: The Examined Gemstones Are Natural Tanzanites Weighing A Total Of 5.35 Carats Across 3 Pieces. Optical And Physical Properties Are Consistent With The Species, And The Stones Are Presumed Heat-Treated To Enhance Color, A Common And Accepted Practice In The Trade.

Condition: Good - Refer Images

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488160+14

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