Quality Assurance Benchmarks highlight workmanship of semi-finished and finished jewelry. Learn how to evaluate the quality of a pear-shaped stone set in a five-prong platinum setting.

Learn how to evaluate the quality of a platinum setting for a pear-shaped center stone with these helpful illustrations and instructional video Perspective view illustration of a pear-shaped center stone set in a five-prong platinum setting.
Close-up side view illustration of a pear-shaped center stone set in a five-prong platinum setting.
Side view illustration of a pear-shaped center stone set in a five-prong platinum setting.

Potential Problems and Engineering Features

The bearing is not properly fitted to the shape of the stone, leaving visible gaps which will cause loosening over time.

The edges of the v-prong must conform to the stone.

How-to Video

Featured Quality Assurance Benchmarks

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 ruthenium ring with no diamonds in the shank that was sized up using a torch with these helpful illustrations and instructional video.

Sizing Up: Platinum Ruthenium

Sizing up a platinum ruthenium ring using a torch

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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 a platinum cobalt ring with no diamonds in the shank that was sized down using a torch. Contains video and illustrations.

Sizing Down: Platinum Cobalt

Sizing down a platinum cobalt ring using a torch

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