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How a $250,000 7-carat diamond ring is made
Scraps of platinum are melted to create one piece.
Then it is dipped into water to cool.
The platinum is cut into three main pieces.
The diamonds are outlined on a piece of platinum.
Then the platinum is carved to fit each stone.
The baskets are filed until smooth.
Next, the band is made.
This is then welded together with the baskets...
The ring gets a final polishing and is cleaned with hot steam.