Natural Vein Graphite Powder

Seven Grades.
One Source.

High-crystallinity graphite from the Ragedara mine, Sri Lanka — known historically as Ceylon graphite. Available in purity grades from 80% to 99.5% carbon and custom particle sizes from 3 µm to 3 mm. Minimum 20 tonnes FOB Colombo.

Purity grades

Select the grade
for your application

Grade Carbon % Particle Size (D50) Classification Typical Applications
G-80 ≥ 80% Cg 75–500 µm (custom) Industrial Refractory bricks, friction materials, foundry additives Enquire
G-90 ≥ 90% Cg 45–300 µm (custom) Industrial Carbon brushes, electrodes, steel plant refractories Enquire
G-94 ≥ 94% Cg 10–150 µm (custom) Technical Lubricants, gaskets, conductive coatings, foundry Enquire
G-96 ≥ 96% Cg 5–75 µm (custom) Technical Conductive polymers, EMI shielding, EDM, brake pads Enquire
G-98 ≥ 98% Cg 3–50 µm (custom) High Purity Batteries, graphene precursor, high-purity lubricants Details
G-99 ≥ 99% Cg 3–30 µm (custom) Premium Li-ion battery anodes, nuclear, advanced composites Details
G-99.5 ≥ 99.5% Cg 3–25 µm (custom) Ultra Pure Graphene synthesis, semiconductor, nuclear reactors Enquire

All particle sizes are indicative. Custom D10/D50/D90 distributions available on request. Confirm your requirements when enquiring.

Technical specifications

Product characteristics

Physical Properties

Mineral form
Vein (crystalline) graphite
Crystal structure
Hexagonal
Colour
Black / dark grey
Density
2.09–2.23 g/cm³
Hardness (Mohs)
1–2
Melting point
> 3600°C (sublimes)

Chemical Properties

CAS Number
7782-42-5
Carbon content
80–99.5% Cg
Ash content
Reported per CoA
Moisture
Reported per CoA
Sulphur
Reported per CoA
Origin
Ragedara Mine, Sri Lanka

Delivery & Compliance

MOQ
20 metric tonnes
Packing
25 kg / 50 kg / 1 t bags
Port of loading
Colombo, Sri Lanka
Incoterms
FOB / CIF available
REACH
Compliant
Documentation
CoA, BL, MSDS, packing list
Lead time
Discuss at enquiry stage
Not sure which grade?

Contact us with your application details and target particle size distribution. We will recommend the optimal purity grade and confirm availability.

Get in Touch
Common questions

Frequently asked
questions

What is the minimum order quantity?
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The minimum order quantity is 20 metric tonnes, shipped FOB Colombo Port, Sri Lanka. This applies to all grades. For smaller evaluation quantities, please contact us to discuss sample arrangements.
What is the difference between vein graphite and flake graphite?
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Vein graphite is formed from hydrothermal carbon precipitation deep in the Earth's crust and achieves natural purities of 90–99.5% Cg without chemical treatment. Flake graphite — sourced from China, Madagascar, Brazil and elsewhere — requires acid purification to reach equivalent purity levels. This processing difference matters: vein graphite has superior crystallinity, fewer metallic contaminants, and a smaller environmental footprint per unit of high-purity output.
Can you supply custom particle sizes?
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Yes. Most grades are available in D50 particle size ranges from 3 µm to 3 mm. Please contact us with your target particle size distribution (D10, D50, D90) and we will confirm availability and pricing. Custom mesh sizes (e.g. 200 mesh, 325 mesh) can also be specified.
What documentation comes with each shipment?
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Every shipment includes a Certificate of Analysis (CoA) from independent third-party laboratory analysis, Bill of Lading, Material Safety Data Sheet (MSDS), REACH compliance declaration, and a full packing list. Additional documentation — including mine-level sourcing declaration and carbon footprint data — is available on request.
Is your graphite REACH compliant?
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Yes. Natural graphite (CAS 7782-42-5) is REACH registered. Full REACH documentation is provided with every shipment. For European buyers subject to supply chain due diligence requirements under CSDDD or internal ESG mandates, we can also supply origin documentation and mine-level sourcing declarations.
What is Ceylon graphite?
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Ceylon graphite is the historical trade name for Sri Lankan vein graphite, used since the British colonial era when Sri Lanka was known as Ceylon. The term remains standard in materials science literature and international procurement specifications. Our graphite originates from the Ragedara mine in Sri Lanka — the world's only commercial source of high-crystallinity vein graphite — and is the same material described as Ceylon graphite in academic and industry references.
Is your graphite affected by China's export restrictions?
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No. China's graphite export licensing requirements, introduced in October 2023, apply only to Chinese-origin graphite. Sri Lankan vein graphite is entirely independent of the Chinese supply chain and unaffected by these restrictions. See our Supply Security page for more detail.
Request a Sample or Quote

Fill in your grade, particle size requirements, and estimated volume. We respond within one business day with specifications and FOB pricing.

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