Zambian Emerald
Zambian emerald characteristics, inclusions, comparison with Colombian, and market position.
By Fabian Moor
Last updated
origin/zambia emerald kagem african
Introduction
Zambia has become the world's second-largest emerald producer, with the
Kagem mine being the most significant operation. Zambian emeralds have
distinct characteristics from Colombian material, often offering better
clarity at competitive prices. [1]
The Zambian emerald trade has grown significantly since the 1970s.
Major Sources
Zambian emerald production:
Kagem Mine
Other Operations
- Grizzly Mining (various mines)
- Artisanal mining continues
- Multiple smaller operations
Characteristics
Zambian emerald distinctive features:
Colour
Clarity
- Generally cleaner than Colombian
- Eye-clean stones more available
- Good transparency common
- Inclusions when present are different type
Zambian Emerald Inclusions
| Inclusion | Description |
|---|---|
| Actinolite needles | Amphibole needles and rods |
| Phlogopite mica | Bronze-coloured platy flakes |
| Magnetite | Opaque black crystals |
| Two-phase inclusions | Liquid + gas (no halite) |
| Blocky crystals | Various mineral crystals |
| Growth tubes | Parallel channels |
No Three-Phase
Colombian vs Zambian
Colombian
- Pure green (warmer)
- Three-phase inclusions
- More included typically
- Calcite, pyrite common
- Higher premiums
Zambian
- Bluish-green (cooler)
- Two-phase inclusions
- Often cleaner
- Actinolite, mica common
- Better value
Market Position
Zambia's place in the emerald market:
Strengths
- Consistent quality supply
- Better clarity available
- More transparent market (Gemfields auctions)
- Ethical sourcing certified
- Competitive pricing
Value Comparison
Zambian emeralds are generally priced below equivalent Colombian stones;
the differential is narrowing as market acceptance grows.
- Increasing market acceptance
- Some buyers specifically seek Zambian
Treatments
Treatment status in Zambian emeralds:
- Oiling: Standard practice, as with all emeralds
- Resin filling: Some material treated
- Generally less: Cleaner rough needs less treatment
- Disclosure: Same standards as Colombian
References
- ↑ 1. Saeseaw, S.; Renfro, N.; Palke, A.; Sun, Z.; McClure, S. (2019). Geographic Origin Determination of Emerald. Gems & Gemology, 55(4), 614–646. DOI: 10.5741/gems.55.4.614.
- ↑ 2. Karampelas, S.; Hauzenberger, C.; Peucat, J.; Fritsch, E. (2019). Emeralds from the Most Important Occurrences Worldwide: Chemical Fingerprinting by LA-ICP-MS. Minerals, 9(9), 561. DOI: 10.3390/min9090561.