I always recommend visiting a reputable jeweler to have your finger professionally sized. Be sure to tell them what type of ring you’re purchasing and the width of the shank, as that can affect sizing.
As a general rule, size up by half a size for rings that are 6mm or wider, or if you're planning to stack rings totaling 6mm or more. Wider rings cover more of the fleshy part of the finger, which has a larger diameter than the base.
Finger sizes can fluctuate with temperature and activity, so aim for an average size. If your size varies frequently, it’s usually best to size slightly up—a tight ring can be uncomfortable, but a slightly loose one can be secured with a “keeper band,” a thin stacking ring worn outside the main ring.
If you're unable to visit a jeweler, consider ordering a ring gauge—you’ll use it more than you think:

• Standard Gauge (for rings 5mm and under)
• Wide Band Gauge (for rings 6mm and up)
• International Ring Size Conversion Chart

RESIZING

I offer free resizing on all of my pieces (see exceptions below). Customers are responsible for all shipping and handling costs. An invoice will be sent for shipping, to be paid before the piece is returned.

Exceptions:

• Diamond eternity bands or designs that wrap around the entire ring cannot be resized.
• If resizing is outside the limit and would compromise the integrity or structure of the ring, I reserve the right to decline the request.

Make sure your size is accurate before placing an order. I use my own calibrated ring mandrel to confirm sizing before shipping. If you believe your order is the incorrect size, I’ll need to inspect it once returned, with my own tools before taking next steps.

For sizing questions, please contact starr@piecesofstarr.com.