| Weight | 18.23 ct |
|---|---|
| Dimensions | 26 × 12.3 × 7 mm |
| Variety | Sapphire Crystals |
| Treatment | unheated |
| Mining Location | Pelmadulla village around mining in Sri Lanka |
18.23 ct Natural Sapphire Crystal from Pelmadulla, Sri Lanka – Complete Corundum Crystal with Growth Striations
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Stone Identity & Quality
This natural sapphire crystal weighs 18.23 carats and measures 26 × 12.3 × 7 mm. The specimen originates from Pelmadulla village around mining in Sri Lanka, an area known within Sri Lanka’s gem belt for producing sapphire crystals through traditional alluvial mining.
The crystal remains complete and unheated, preserving its original natural structure. Such crystals represent the raw mineral form of sapphire before any cutting or polishing processes.
Color & Visual Characteristics
The crystal displays a soft creamy sapphire color, an unusual tonal variation within the corundum family. This color is influenced by trace elements present in the crystal during its formation within metamorphic geological environments.
The subtle color tone combined with the crystal’s transparency allows internal features and growth structures to be clearly visible.
Internal & External Features
One of the most interesting aspects of this specimen is the presence of distinct natural growth striations on the crystal faces. These lines formed during the crystal’s growth and provide evidence of the mineral’s development conditions.
The crystal retains:
Natural termination points
Parallel growth striations
Well-preserved crystal faces
Natural inclusions typical of sapphire crystals
These features are valued by collectors because they show the natural morphology of corundum crystals.
Cutting & Treatment Potential
While sapphire crystals can sometimes be cut into gemstones, specimens with complete crystal structures and visible growth patterns are often more valuable as mineral specimens.
Cutting such a crystal would remove the natural structural features that make it unique. For this reason, collectors often preserve crystals like this in their natural form.
The specimen is presented unheated and untreated, maintaining its geological authenticity.
This stone is basically not Cut type stone.
Source & Ethical Position
The crystal was sourced from Pelmadulla village around mining in Sri Lanka, part of the island’s well-known gem-bearing region.
Sri Lanka’s sapphire deposits are largely secondary alluvial deposits, meaning crystals formed in metamorphic rocks before being transported by natural geological processes into river gravels where miners eventually discover them.
At Danushka Gems & Minings, we work closely with local mining communities to obtain gemstones responsibly and present them transparently with accurate origin information.
Frequently Asked Questions
A sapphire crystal is the natural mineral form of corundum before it is cut or polished into a gemstone.
Yes. Growth striations are natural lines that form during the crystal’s development inside the earth.
No. This specimen is completely natural and unheated.
Some crystals can be cut, but many collectors prefer to keep well-preserved crystals intact. This js nlt for cutting type crystal.
Complete crystals provide important insight into natural mineral formation and are highly appreciated by mineral collectors.
