Sizing Down Platinum Rings
Sizing Up Platinum Rings
Sizing up a platinum ruthenium ring using a laser welder
Sizing down a platinum cobalt ring using a laser welder
Techniques for refinishing worn platinum jewelry
Evaluate a prefinished, polished, and buffed platinum ring
Assembly of a PtCo Pear-Shape to a 14K Yellow Gold Mounting
Install a PtRu Peg Setting into a 14K Yellow Gold Mounting
Learn the characteristics of common platinum alloys
Working with Platinum: Tools and How To Avoid Contamination
40% of prong metal is removed at the bearing.
Prongs are evenly and consistently shaped.
There is no damage to the stone.
The stone is seated perpendicular and square to the setting.
There are no tool marks inside the setting or around the prongs.
The setting has a gallery wire between the tops of the prongs and the base of the setting.
The stone is level.
Prong contact is between 40% and 50%.
Prong height is 100%.
There are no gaps at the bearing above or below the girdle.
Both the round and v-prongs show bearings that are not fitted to the stone, leaving visible gaps.
Edges of the v-prong are raised up and will snag on clothing. Once snagged, they could pull back and loosen the stone.
Setting a Pear-Shaped Stone in Platinum Prongs
Sizing up a platinum ruthenium ring using a torch
Learn how to determine finger and ring sizes accurately
Sizing down a platinum cobalt ring using a torch