Emerald Halo Diamond Engagement Ring

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Ring Size Guide

Find the size that best fits you or a loved one with the Cukari jewelry size guide. Follow the guide below to choose the right size before placing your order.

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Adjustable Open Rings

Many of our sterling silver rings for both men and women feature an adjustable open-band design, allowing a comfortable fit for a wide range of finger sizes. There’s no need to worry about choosing an exact size—simply adjust the ring until it fits comfortably. This versatile design makes each ring an excellent gift and a practical choice for everyday wear.

How to Adjust Your Ring

Achieve the Perfect Fit

Our adjustable rings are designed to be gently resized for a comfortable and secure fit. Please refer to the adjustment illustration above and follow the steps below for the best wearing experience.

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1. Put on the Ring

Slide the ring onto the finger where you plan to wear it. It should go on easily. If it feels too tight at first, do not force it on. Adjust the size first, then try again.

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2. Adjust Gently

To make the ring smaller, gently press the open ends inward. To make it larger, carefully pull the ends apart. Apply slow, even pressure with both hands and avoid bending the ring too quickly or excessively.

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3. Check the Fit

The ring should feel comfortable and secure—snug enough to stay in place without feeling tight. When you move your hand naturally, it should remain comfortably positioned without sliding or rotating excessively.

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Close Rings

Fixed Size Rings

1. Closed rings cannot be adjusted after purchase.
2. Please measure your finger carefully and select the correct size before ordering.
3. If you are between two sizes, we recommend choosing the larger size for a more comfortable fit.

Ring Size Chart

US (Size)	EU (Size)	Diameter (mm)	Circumference (mm)
5	49	15.7	51.9
6	52	16.5	51.9
7	54	17.3	54.4
8	57	18.2	57.0
9	60	19.0	59.5
10	62	19.8	62.1
11	65	20.6	64.6
12	67	21.4	67.2

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How to Measure Your Ring Size

Method 1 — Measure Your Finger

1. Wrap a strip of paper or string around your finger.
2. Mark where the ends meet.
3. Measure the length in millimeters.
4. Compare the measurement with the size chart.

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Method 2 — Measure an Existing Ring

1. Choose a ring that fits comfortably.
2. Measure the inside diameter.
3. Match the diameter to the size chart.

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Tips Before Ordering

1. Measure your finger at room temperature.
2. Fingers are usually larger in the evening than in the morning.
3. Avoid measuring immediately after exercise or in very cold weather.
4. If your knuckle is much wider than the base of your finger, choose the larger size.
5. Adjustable sterling silver rings fit a wider range of sizes, while closed rings should match your measurement as closely as possible.