Trade knowledge base
Practical, factory-level guides on sourcing lab grown diamonds, moissanite and gemstone jewelry: how grades really work, what certification means for customs and resale, how MOQ and tiered pricing behave, and how to compare landed cost between suppliers.
Compliance & Shipping · 6 min read · Aug 1, 2026
How to specify sterling silver correctly, why nickel release and plating thickness decide whether your goods clear compliance, and how hallmarking rules differ acro…
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Compliance & Shipping · 6 min read · May 23, 2026
Which jewellery items fall under nickel release limits, what documentation a compliant supplier provides, and how to build a testing routine that does not cost more…
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Compliance & Shipping · 6 min read · Apr 11, 2026
What to put on a jewellery invoice, how HS classification affects duty, why undervaluation is a bad trade, and how to keep a first shipment out of customs storage.
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