Here are some key details about 10 grams of 18K gold nuggets from a refinery: Weight: 10 grams Purity: 18K (75% gold, 25% alloy) Gold Content: 7.5 grams (10g x 0.75) Refinery Cost: Around $300-$400 Certification: Usually comes with a certificate of authenticity from the refinery Packaging: Typically sealed in a protective plastic casing or pouch Refinery Mark: May feature a stamp or hallmark from the refinery (e.g., PAMP, Johnson Matthey) Investment: Suitable for investors seeking smaller gold investments Collectibility: May appeal to collectors due to unique nugget shapes and sizes