Upper-bound estimate based on declared gross weight and owner-controlled tiers (under 25 g, 25–49.99 g, 50 g+). No stone weight is automatically deducted: actual payout may be lower and the rate tier may change after deductions. This is not a binding offer. Authenticity, actual net metal weight, purity, components and market price require in-person verification. Collectible coins, gems, plated or gold-filled items require individual appraisal.