| Weight | 3.85 ct |
|---|---|
| Dimensions | 10.5 × 8.8 × 4.7 mm |
| Grade | Facet Grade |
| Variety | Sapphire Rough |
| Mining Location | Ratnapura village around mining in Sri Lanka |
| Treatment | unheated |
| Color | yellow |
3.85 ct Unheated Ceylon Yellow Sapphire Rough – Facet Grade Sapphire from Ratnapura, Sri Lanka
Stone Identity & Quality
This natural facet grade Ceylon Yellow Sapphire rough weighs 3.85 carats and measures 10.5 × 8.8 × 4.7 mm. The stone originates from Ratnapura village around mining in Sri Lanka, a region globally recognized for producing natural sapphires of exceptional quality.
The stone remains unheated and untreated, preserving its natural geological characteristics. Its size and structure place it within the category of sapphire rough commonly selected by lapidaries for gemstone cutting.
Color & Visual Characteristics
The rough sapphire displays a consistent yellow body color with evenly distributed tone across the crystal structure. Under natural lighting conditions, the color appears balanced without strong zoning patterns.
Yellow sapphires from Sri Lanka often show subtle tonal variations depending on trace elements within the crystal lattice. In this specimen, the color appears stable and evenly spread, which is an important factor for cutters seeking predictable color results after faceting.
Internal & External Features
The stone retains its natural alluvial surface, shaped by geological transport through Sri Lanka’s gem-bearing river gravels. Minor surface textures and growth marks are typical in sapphire rough of this type and provide insight into the stone’s natural formation.
Internally, the structure appears suitable for faceting evaluation, with the main body maintaining adequate depth and proportion for orientation planning.
Cutting & Treatment Potential
For lapidaries, sapphire rough is evaluated based on:
Color distribution
Depth and geometry
Internal structural stability
Potential yield after cutting
This specimen’s balanced thickness and color consistency allow cutters to consider multiple design approaches. Depending on orientation, the stone may be planned for shapes that maintain color intensity while preserving weight.
While many sapphires in the market undergo heat treatment to enhance color and clarity, this specimen is presented in its natural unheated condition, allowing buyers to decide the future of the stone based on their own cutting philosophy.
Source & Ethical Position
The sapphire was sourced directly from Ratnapura village around mining in Sri Lanka, one of the most historic sapphire mining regions known for traditional small-scale mining methods.
At Danushka Gems & Minings, we work closely with local mining communities, ensuring that gemstones are obtained through legitimate and responsible sourcing practices.
Presenting rough gemstones allows collectors and professionals to witness the natural stage of a gemstone before transformation into finished jewelry.
Frequently Asked Questions
Facet grade rough refers to gemstone material with suitable clarity, color, and structure for cutting into a faceted gemstone.
No. This stone is presented as a natural unheated sapphire from Sri Lanka.
Ratnapura is one of the world’s oldest sapphire mining regions, known for producing many varieties of natural corundum gemstones.
Yes. Its structure and depth make it suitable for professional cutting evaluation.
Final results depend on orientation, internal structure, and the cutter’s decisions during the faceting process.
