Basic Analysis
Copper Testing – Paraíba Tourmaline.
Tests for the presence of copper in tourmaline specimens to determine eligibility for the Paraíba designation, one of the most commercially significant classifications in coloured gemstones.
Service fee
$5 USD
Rate
per stone
What this service covers.
Paraíba-type tourmaline derives its distinctive neon blue-to-green colour from trace copper. The laboratory uses energy-dispersive X-ray fluorescence (EDXRF) to detect and quantify copper content, confirming whether a tourmaline qualifies as copper-bearing.
This test is essential for trade disclosure and valuation, as copper-bearing tourmaline commands a significant premium over non-copper-bearing material of similar appearance.
Included in this service
✓ EDXRF chemical analysis
✓ Copper content detection and quantification
✓ Determination: copper-bearing or non-copper-bearing
Get in touch
Submit a stone for analysis.
Contact the laboratory to arrange a submission, discuss analytical requirements, or request a quotation for batch work.
Service summary
Copper Testing – Paraíba Tourmaline
Tests for the presence of copper in tourmaline specimens to determine eligibility for the Paraíba designation, one of the most commercially significant classifi…