Fingers change size. It happens gradually over years, rapidly during pregnancy, seasonally with temperature, and immediately when a ring is sized incorrectly from the start. Whatever the reason your ring no longer fits correctly, resizing is a standard jeweler service — and it is worth understanding what is involved before you bring your moissanite ring in.
Can Moissanite Rings Be Resized?
Yes. Moissanite rings can be resized, and the stone itself is not a limiting factor. Moissanite is thermally stable — it does not react to the heat involved in resizing the way some stones do — and with a hardness of 9.25 on the Mohs scale, it is not at risk of scratching or damage during the resizing process when handled correctly.
The limiting factors in ring resizing are the band design and the metal, not the stone. Understanding those limits helps you know what to expect before you go to a jeweler.
How Ring Resizing Works
Ring resizing involves physically altering the circumference of the band. There are two directions: sizing up (making the ring larger) and sizing down (making it smaller). The processes are different and have different limitations.
Sizing up (making the ring larger): The jeweler cuts the band at the bottom, stretches or inserts a piece of metal to add the required circumference, and solders the join closed. The inserted metal is matched to the original metal type and karat. The join is then smoothed, polished, and finished to match the rest of the band. For most plain bands and simple solitaire settings, sizing up by 1–2 sizes is routine. Larger adjustments are possible but may affect the structural integrity of the band and the visual consistency of the finish.
Sizing down (making the ring smaller): The jeweler cuts a section out of the band at the bottom, brings the two ends together, and solders the join closed. This is generally simpler than sizing up and can accommodate larger adjustments more reliably. The same finishing process applies.
Limitations by Band Design
Plain solitaire bands: The most straightforward to resize. A plain band with no side stones, no pavé, no engraving on the shank can typically be sized up or down by 2–3 sizes without complications. This covers the vast majority of sizing needs.
Pavé or side-stone bands: Bands with stones set along the shank present a more complex resizing challenge. The stones closest to the sizing area may need to be removed, the metal adjusted, and the stones re-set afterward. This is more labor-intensive and adds cost. It is also possible that the stone pattern will not align perfectly after resizing, which is worth discussing with the jeweler before proceeding.
Eternity bands: Full eternity bands — where stones run continuously around the entire circumference of the band — are the most difficult to resize. Because there is no unset metal at the bottom of the band to work with, traditional resizing is not possible. Options include: adding sizing beads or a spring insert on the inside of the band to adjust fit without altering the exterior, having the band remade entirely at the correct size, or choosing a half-eternity band in the first place, which does have plain metal at the bottom and can be sized normally.
Tension settings: Tension settings — where the stone appears to float between two ends of the band held by metal pressure — are the most complex to resize because the tension calibration is integral to the setting. Resizing a tension ring requires recalibrating the tension across the entire band. This is possible but requires a jeweler with specific experience in tension settings. Not all jewelers will take on this work; ask before leaving the ring.
Bezel settings: Bezel-set rings resize similarly to plain solitaires. The bezel itself is not affected by resizing at the band shank, so the process is straightforward for most bezel designs.
Metal Considerations
Gold (14K and 18K): Both resize well. Yellow gold and rose gold show very little evidence of resizing when done by a skilled jeweler. White gold may show a slight color difference at the join because white gold is an alloy that is rhodium-plated for color consistency; the join may need to be rhodium-plated after resizing to match the rest of the band. This is standard practice and adds minor cost.
Platinum: Resizes excellently. Platinum is more malleable than gold and the join in a platinum resize is typically very clean. Platinum also does not require rhodium plating, so the post-resize finish is simpler.
Silver: Resizes easily but is not a material we use for fine jewelry settings, as it tarnishes and is too soft for long-term stone security.
How Much Does Ring Resizing Cost?
Ring resizing costs vary by jeweler, location, and the complexity of the work. As a general guide: a simple solitaire resize (plain band, 1–2 sizes) typically costs $50–$150 at most jewelers. A more complex resize involving pavé or side stones may cost $150–$300 or more, depending on the number of stones that need re-setting. Eternity band resizing solutions (sizing beads, spring inserts) typically cost $50–$100. Full remakes are priced as new work.
Our Lifetime Gemstone Warranty covers the moissanite stone itself. For resizing services, we recommend working with a local jeweler who can assess the ring in person and provide a specific quote before any work is done.
When to Size Your Ring
Ring size fluctuates throughout the day — fingers are typically largest in the afternoon and evening, smaller in the morning and in cold temperatures. The standard advice is to measure ring size in the afternoon when the finger is at its average size, and to ensure the ring fits comfortably at that time rather than being sized to the smallest morning measurement.
If you are pregnant or recently postpartum, wait until your ring size has stabilized before resizing. Finger size changes significantly during pregnancy and typically returns to its pre-pregnancy size within a few months of delivery.
If your ring is consistently too loose rather than too tight, sizing down sooner rather than later is worth doing — a ring that is too loose is a ring at risk of being lost.
Our Lifetime Upgrade Program
If your needs have changed beyond what a resize can address — if you want a different size stone, a different setting, or a completely different design — our Lifetime Upgrade Program allows you to apply the value of your original moissanite stone toward a new piece. This is often a better solution than resizing for significant design changes.