4.52 ct Unheated Ceylon Purple Sapphire

Collector's Note
This 4.52 ct natural purple sapphire is a substantial and highly individual collector stone, combining unenhanced color, documented Sri Lankan origin, notable size and authentic antique cutting character. Its antique cushion mixed cut has a deep profile, gently irregular outline and visible asymmetry that reflect traditional weight-retaining cutting priorities rather than modern standardized proportions.

Gemstone Details
Gemstone: Natural Purple Sapphire
Species: Corundum
Weight: 4.52 ct
Shape / Cut: Antique Cushion Mixed Cut
Measurements: 9.40 × 7.32 × 5.75 mm
Color: Moderate Violet
Clarity: Moderately Included
Polish: Good
Symmetry: Good, with visible antique-cut irregularity
Overall Cut Assessment: Well Made
Table: 51%
Total Depth: 78.6%
Geographic Origin: Sri Lanka (Ceylon)
Treatment: None detected; no gemological evidence of heat

Treatment & Origin Disclosure
The accompanying report identifies Sri Lankan (Ceylon) geographic origin and states that there is no gemological evidence of heat treatment.

Laboratory Documentation
Accompanied by Carte Blu Report No. 44090126, dated October 11, 2019.

Provenance / Collector Significance
The combination of origin, untreated status, antique cutting and weight above four carats gives the stone meaningful collector interest. Visible inclusions and irregularities are part of its natural character and historic-style presentation.

Care & Setting
Sapphire is durable, but this stone’s inclusions and antique proportions should be considered before setting. A protective custom mounting is recommended for frequent wear. Clean with warm water, mild soap and a soft brush.

Digital Gem Passport
Accompanied by an Otzera Digital Gem Passport preserving its identifying details, laboratory documentation, antique-cut characteristics, and treatment and origin disclosures.