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Solve ring twist problems
and are safe and secure.
Makes your
easy to put on
over enlarged

Moving Sample Image
then closes
to fit
your finger
snugly and

What is a expandable ring shank?

The shank of a ring is the lower part, the part that is generally not seen unless the ring twists and turns on the finger.

A ring with a conventional fixed shank must be made large enough to go over your "knuckle" (finger joint) regardless of how enlarged the knuckle is. This makes the ring too large in the wearing position, causing it to twist and turn on your finger.


Can any ring be fitted with a Finger Mate expandable ring shank?

Finger Mate expandable shanks are available in a wide variety of styles and widths to accommodate almost any ring, starting at approximately $500.


What is it made of?

Finger Mate expandable shanks are made exclusively of 14K gold or platinum. No steel springs or other base metal is ever used in our shanks.


Is this something new?

Finger Mate has been making expandable shanks since 1964! It is available at over 11,000 fine retail jewelers in North America.

How does it work?


The Finger Mate shank opens automatically when the ring is pulled from the top and locks closed when its sides are squeezed together. Its 2-position catch allows for a half-size adjustment when needed. There are no buttons to push, nor are there any dangling flaps to engage. The special safety spring allows the shank to open 3 - 4 sizes, but prevents it from opening fully, securing the ring from loss if the catch is not locked.

Is it safe?

Absolutely! The two-position locking mechanism not only provides an extra margin of safety, but it also provides relief if the ring should become too tight on particularly hot or muggy days. Furthermore, a concealed spring prevents the ring from opening too far. There is always a continuous band surrounding the finger.

How can I see it?

Any Finger Mate dealer can demonstrate our expandable ring shank and provide an estimate to attach it to your rings. Click here to find a dealer near you. Or, have your jeweler contact us for an information kit.

Is it guaranteed?

All Finger Mate products come with an Exclusive Limited Warranty* on the Catch and Spring. It provides that should the Catch and Spring EVER fail, for any reason, it will be replaced for just a service charge.



*Full copy of Warranty available on request.


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