Laboratory
CDTEC GemLab
Bogotá, Colombia
Emeralds, coloured stones, diamonds; treatment and origin
CDTEC Gemlab is a gem laboratory in Bogotá, at the centre of the Colombian emerald trade.
What it does
Emerald identification with clarity-enhancement (oil and resin) reports and origin opinions, as well as other coloured stones and diamonds.
Using any laboratory
- Ask what the report will state (identity, treatment, origin, grade) and how long it takes; turnaround and fees change.
- Check a report online with the laboratory's own report-check service, and match the stone to the report.
- Reports from different laboratories can differ, especially on colour grades, treatment and origin. A report is an opinion based on the tests made, not a valuation.
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