| Grade | Facet Grade |
|---|---|
| Weight | 18 ct ,9.12 ct, 5.40 ct |
| Dimensions | (13.7 × 11.6 × 7.5 mm), (18.1 × 12 × 8.9 mm), (9.5 × 7.7 × 7.3 mm) |
| Variety | Sapphire Rough |
| Mining Location | Ratnapura village around mining in Sri Lanka |
| Treatment | unheated |
Natural Unheated Blue Sapphire Rough Parcel – 18 ct, 9.12 ct & 5.40 ct from Ratnapura Village, Sri Lanka
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Stone Identity & Quality
Stone Type: Natural Corundum
Variety: Blue Sapphire
Total Stones: 3
Weights:
* 18.00 ct
* 9.12 ct
* 5.40 ct
Dimensions:
* 18 ct – 18.1 × 12 × 8.9 mm
* 9.12 ct – 13.7 × 11.6 × 7.5 mm
* 5.40 ct – 9.5 × 7.7 × 7.3 mm
Treatment Status: Unheated
Quality Grade: Facet Grade Rough
Origin: Ratnapura village around mining in Sri Lanka
This parcel consists of premium facet-grade blue sapphire rough suitable for professional cutting.
Color & Visual Characteristics
The stones display natural Sri Lankan blue tones ranging from medium to moderately deep saturation. The color appears internally distributed and consistent with Ratnapura-origin corundum.
All three stones retain natural alluvial shapes formed through river transport, preserving organic contours and workable cutting geometry.
Internal & External Features
The rough surfaces show typical alluvial textures and natural growth features. In the 18 ct stone, tiny bubble-like inclusions are visible under close inspection. These features should be considered during orientation planning.
The internal structure across the parcel appears suitable for professional faceting, with varying depth ratios allowing flexibility in pavilion development and yield management.
Cutting & Treatment Potential
All stones are currently unheated and untreated.
Based on proportions, potential cutting designs may include cushion, oval, or mixed faceting styles. Proper orientation will be required to manage inclusions and optimize color retention.
Final clarity and yield depend on detailed pre-cut evaluation and professional cutting decisions.
Source & Ethical Position
This parcel is sourced directly from mining communities in Ratnapura village around mining in Sri Lanka — one of the world’s historic sapphire-producing regions.
Danushka Gems & Minings works closely with local miners to maintain transparent origin, structural evaluation, and realistic transformation expectations.
Our approach prioritizes geological authenticity over exaggeration.
Frequently Asked Questions
Yes, all three stones are natural unheated blue sapphires from Ratnapura village around mining in Sri Lanka.
Facet grade indicates the rough contains suitable internal areas for professional faceting.
No. They are currently unheated and untreated.
Natural inclusions typical of alluvial sapphire are present. The 18 ct stone shows tiny bubble-like inclusions under inspection.
Cushion, oval, or mixed cuts may be possible depending on structural orientation and yield planning.
