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.

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.

Close-up illustration of a round prong with a gap between the bearing and the crown of the stone.

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

Close-up illustration of a v-prongs that is raised up above the stone.

How-to Video

Setting a Pear-Shaped Stone in Platinum Prongs

play

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

Learn more
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

Learn more
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

Learn more
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

Learn more
Back To Top