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Calculating gold melt loss — yield & merma guide
Calculate gold melt loss (merma): formula, typical loss rates by alloy (999‰, 750‰, 585‰) and online melt yield calculator.
Key facts
- Typical loss — 999‰ gold (induction)
- 0.1–0.3%
- Loss — 750‰ 18k gold (flame)
- 0.5–1.5%
- Loss — 585‰ 14k gold
- 0.8–2%
- Correction formula
- Buy price = Spot × (1 − loss rate)
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Melt loss calculator
Melt Loss (Merma)
g
%
Typical losses: Gold 0.5–1.5% · Silver 1–3% · Platinum 0.8–2%
Initial valueCHF 11459.70
Lost metal (2.500g)− CHF 286.49
Recovered weight97.500 g
Value after meltingCHF 11173.21