1. Inquire about official website: International diamond transactions are usually conducted in world-renowned auction houses or jewelry stores. Relevant institutions usually publicize the information of the items auctioned or sold in official website, including the auction time, place, pricing, etc., which can be inquired in relevant official website.
2. Find the item number: Except for official website, auction or jewelry agencies usually publish the number of each item in official website or at the trading site. You can query detailed item information, including sales, through this number.
3. Consult a professional: If you haven't found the relevant website yet, or you still have questions through the website, you can ask the professionals of the relevant auction or jewelry institutions for the latest sales of the items.
Whether buying or investing in international diamonds, we should be cautious and choose a regular diamond trading institution to trade.