BS EN ISO 24016:2026

BS EN ISO 24016:2026

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Jewellery and precious metals. Grading polished diamonds. Terminology, classification and test methods

€374.00

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BS EN ISO 23345:2026

BS EN ISO 23345:2026

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Jewellery and precious metals. Non destructive precious metal fineness confirmation by ED-XRF

€193.00

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