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
Finger hole is round in shape
Ring dimensions were not measurably reduced after refinishing
Ring was cleaned after refinishing, and exhibits a natural high, bright luster, free of any foreign material
Scratches and other surface marks were burnished and finished without compromising structural integrity or the original design. There were no significant visible indications of wear
All gemstones are tight and secure
Scratches and other surface marks were burnished and finished without compromising structural integrity or the original design. There are no significant visible indications of wear.
A white gold and diamond halo was added at the top of the platinum ring. The white gold’s natural off-white (yellowish) color reveals this.
The ring is made of 90% platinum and 10% iridium. This combination is one the softest platinum alloys. Thicker dimensions are recommended for similar rings that will be worn daily.
White gold solder extends below the halo and is visible on the platinum ring
The shank is thin and appears to have a pitted and cracked solder joint
New platinum tips were soldered onto the prongs. The yellowish color of the white gold solder used is the telltale sign.
Prefinishing, Polishing, and Buffing Worn Platinum Jewelry
Micro-Finishing film is a fast-cutting abrasive that provides precise, uniform, close-tolerance finishes. The abrasive is resin bonded to a polyester film backing, and contains micron-graded mineral particles that are electrostatically and consistently oriented.
Micro-Finishing film is available in sheets, strips, and other shapes. Here it has been attached to standing sticks and labeled for progressive abrasive use.
Micro-Finishing film is ideal for abrasive work on platinum because it can be used wet or dry, it has plain or adhesive backing, and it can be custom fitted and adhered to a variety of tools and shapes for a wide range of applications
Micro-Finishing film is available in a range of grits, from a coarse 180 grit to a very fine 1200 grit
Each compartment in the tray contains attachments that are for specific compounds. Consistent use, as well as cleaning of processed products between steps, eliminates potential for cross-contamination, while improving the platinum’s finish and luster.
These Japanese platinum compounds are evenly blended and adhere well to buffs, brushes, and felt attachments
The same compounds, with larger wheels and attachments, are used at the polishing machine for platinum. Start with the coarsest 800 grit, followed by 1500, 4000, 6000 and finish with the finest 8000 grit.
Learn how to determine finger and ring sizes accurately
Setting a round center stone in a ring with platinum prongs