Sizing Up: Platinum Ruthenium Rings with No Diamonds in the Shank Using a Torch

Quality Assurance Benchmarks highlight workmanship of semi-finished and finished jewelry. Learn how to evaluate the quality of a platinum ruthenium ring with no diamonds in the shank that was sized up using a torch.

Evaluate the quality of a platinum cobalt ring with no diamonds in the shank that was sized down using a torch. Contains video and illustrations.
Perspective view of a platinum 4-prong solitaire with no diamonds set in the shank

Potential Problems and Engineering Features

Matching the Sizing Stock Alloy to the Ring Alloy

Solitaire ring setting without gemstone sitting next to a sizing wire with magnets above the wire

How-to Video

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Safety Reminder

Be sure to wear eye protection

Jeweler at the bench using a torch to size a ring

Featured Quality Assurance Benchmarks

Learn how to determine finger and ring sizes accurately. Contains video and illustrations

Determine Finger and Ring Size

Learn how to determine finger and ring sizes accurately


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    Evaluate the quality of platinum jewelry that has been worn and then refinished.

    Refinish Worn Platinum Jewelry

    Techniques for refinishing worn platinum jewelry


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      Evaluate the quality of a platinum ruthenium ring with diamonds in the shank that was sized up using a laser welder. Contains video and illustrations.

      Sizing Up: Platinum Ruthenium

      Sizing up a platinum ruthenium ring using a laser welder


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        Learn how to evaluate the quality of a platinum ring that has been prefinished, polished, and buffed.

        Prefinish and Finish Platinum

        Evaluate a prefinished, polished, and buffed platinum ring


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