Sizing Down Platinum Rings
Sizing Up Platinum Rings
Additional Topics
Ring is round
No excess solder
Finger size is accurate
Sizing joint is not visible
No pits in the solder joint
Oxidation removed from all portions of the ring
Sizing joint is not visible
No pits in the solder joint
Quality and hallmark stamps are visible
Shank’s shape and original dimensions maintained
There are no tool marks and the piece is brightly polished and finished
Hold the platinum ring with tungsten carbide- or platinum-tipped tweezers. Place a few layers of tissue between the tweezers and the ring to prevent scratches.
Cover the center stone with firecoat solution. Wrap it with wet tissue to protect from the intense heat.
Use 1,700 platinum seamless repair solder. Preheat the inside of the ring, holding the torch below the joint. Position the torch so that the area just beyond the flame’s inner cone is at this location, then move the torch to a position above the joint, directly heating the joint and solder.
Use an intense oxidizing flame for soldering platinum cobalt
Pull the torch back as soon as the solder melts and flows into the joint. The flame must be intense, as the wet tissue and carbide-tipped tweezers act as a heat sink and pull heat away from the joint.
Sizing Down Platinum Cobalt with no Diamonds in the Shank Using a Torch
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The piece is too small to be of any value to a consumer. A retailer factors the value of the scrap into the price for the service. Allowing the consumer to keep the piece would considerably increase the cost.
The piece removed during size reduction weighed 0.3 pennyweights. Twenty pennyweights equal one troy ounce.
Approximately 2.2 millimeters = 1 size
The current platinum market price is $1,686.00 per ounce. Based on current pricing, the value of the small piece of scrap is approximately $25.00.
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