| Weight | 19 ct |
|---|---|
| Grade | Facet Grade |
| Variety | Sapphire Rough |
| Treatment | unheated and untreated. |
| Mining Location | nivithigala village around mining in Sri Lanka |
19 ct Ceylon Natural Yellow Sapphire Rough – Facet Grade from Nivithigala Village, Sri Lanka
Stone Identity & Quality
This 19 carat natural yellow sapphire rough originates from Nivithigala village around mining in Sri Lanka, a region recognized for producing fine corundum material within Sri Lanka’s historic gemstone belt. The stone remains unheated and untreated, preserving its natural geological state.
The crystal presents a workable shape with a balanced depth profile, making it suitable for professional cutting evaluation. As a facet grade rough, it offers the potential for thoughtful planning before preforming and faceting.
Color & Visual Characteristics
The stone displays a natural warm yellow body color, typical of Sri Lankan yellow sapphire formation. When viewed under light, the body tone shows moderate transparency with a consistent yellow presence throughout the crystal.
Depending on orientation and cutting strategy, the stone may produce a bright yellow finished gemstone. If heat treatment is considered, the color may potentially shift toward a stronger vivid yellow or slightly orangish-yellow tone, though the final result always depends on the internal chemistry and structure of the crystal.
Internal & External Features
The external surface shows natural alluvial textures formed during geological transport and weathering processes. Internally, the crystal structure appears relatively stable with visible zoning typical of sapphire rough.
Such zoning can often be managed through careful orientation planning during preforming. The stone provides enough depth to evaluate pavilion alignment and cutting angles before faceting begins.
Cutting & Treatment Potential
This sapphire offers two potential finishing approaches:
* Natural cutting without treatment, preserving the original geological color
* Controlled heat treatment after cutting evaluation to potentially strengthen color saturation
professional cutters will first study the internal structure to determine the most suitable orientation and shape, often considering designs such as oval, cushion, or radiant styles depending on clarity distribution.
Source & Ethical Position
This gemstone was sourced directly from Nivithigala village around mining in Sri Lanka, part of Sri Lanka’s long-standing gemstone mining region. The stone comes through direct connections with local miners and suppliers, supporting the traditional mining communities that have been part of Sri Lanka’s gemstone history for generations.
Frequently Asked Questions
No. The stone is currently unheated and untreated.
Yes. Heat treatment may be considered to potentially enhance the yellow saturation depending on internal chemistry.
Depending on internal clarity and orientation, shapes like oval, cushion, or radiant may be possible.
Yes. It is evaluated as facet grade rough suitable for professional cutters.
It originates from Nivithigala village around mining in Sri Lanka, part of the island’s historic gemstone belt.
