Aquamarine — the blue-green variety of beryl — has been prized by jewellers for centuries. Nigerian aquamarine is gaining international recognition for its clarity and colour, and it represents an increasingly attractive option for jewellers seeking ethically sourced stones outside traditional markets. This guide explains what to look for.
What Is Aquamarine?
Aquamarine is a beryl mineral (Be₃Al₂Si₆O₁₈), coloured by trace amounts of iron. Its colour ranges from pale blue to deep blue-green. It is one of the harder gemstones (7.5–8 on the Mohs scale), making it well-suited to everyday jewellery.
Nigeria's Aquamarine Deposits
Nigeria produces aquamarine in several states, particularly in the North-Central region. Nigerian aquamarine is typically found in pegmatite deposits alongside other beryl varieties such as heliodor and morganite.
Colour Grading
- Light Blue: Pale, watery blue — the most common
- Medium Blue: Even, attractive blue — the commercial standard
- Deep Blue / "Santa Maria": Rich, saturated blue — the most valuable
- Blue-Green: Distinctive greenish-blue — highly sought after in certain markets
Clarity & Size
Aquamarine is typically eye-clean to VS (very slightly included). Nigerian stones range from 1 carat to 50+ carats, with larger sizes available on request. Large, clean stones command premium prices.
Ethical Sourcing
Modern buyers increasingly demand traceable, conflict-free gemstones. DCCNL sources Nigerian aquamarine through vetted mining partners and provides full chain-of-custody documentation on request.
Certification
Independent certification from GIA, GRS, Gübelin or AIGS is available on request. This is especially important for larger stones or when buying for investment purposes.
What to Look For When Buying
- Even, attractive colour without excessive inclusions
- Good cut — proper proportions and symmetry
- Clean clarity — no visible inclusions to the naked eye
- Certification for stones over 5 carats
- Ethical sourcing documentation
- Reputable supplier with a track record
Rough vs Cut
Nigerian aquamarine is available as rough crystal for cutting or as faceted stones ready for setting. DCCNL supplies both, and can provide calibrated pairs and matched parcels for jewellery production.
Request a Quote
DCCNL Nigeria Limited supplies ethically sourced Nigerian aquamarine to jewellers, dealers and collectors worldwide. Contact our export desk for current availability, sizes and pricing.