Quality Assurance Benchmarks highlight workmanship of semi-finished and finished jewelry. Learn how to evaluate the quality of a platinum cobalt pear-shaped setting installed onto a 14K yellow gold mounting.

Four-prong, pear-shaped platinum cobalt setting with 14K yellow gold shank

The joints on each side of the platinum setting are not visible, and have no pits, cracks or discolorations.

The joints between the mounting and the setting are even and in full contact.

The setting is perpendicular to and in alignment with the mounting.

Four-prong, pear-shaped platinum cobalt setting with 14K yellow gold shank

The joints between the mounting and the setting are even and in full contact.

There are no tool marks or unfinished areas on the ring, including inside the setting.

The mounting is quality stamped 14K gold and 950 platinum cobalt.

Potential Problems and Engineering Features

Preheat the assembly and apply a protective ceramic spray. The protective ceramic spray will inhibit oxidation from occurring on both the platinum cobalt setting and the yellow gold shank.

Platinum cobalt setting being soldered to 14K yellow gold shank

Solder the setting using gold easy solder and gold soldering techniques.

The hottest part of the flame is just beyond the cone. Heat the joint using that area of the flame, and conduct the heat between the gold mounting and platinum setting. Solder one joint at a time.

The protective ceramic spray coating is dissolved in hot water after the assembly has been soldered.

How-to Video

Assembly of a PtCo Pear-Shaped Setting to a 14K Yellow Gold Mounting

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