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.

Side view of a platinum solitaire with no diamonds set in the shank
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

Sizing Up a Platinum Ruthenium Ring Using Sizing Stock and a Torch

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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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Quality of Platinum Jewelry that was Furbished by Burnishing

Refinish Worn Platinum Jewelry

Burnishing: Evaluate the Quality of Platinum Jewelry that was Furbished by Burnishing

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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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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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