Question 1

How do I measure my ring size accurately?

Accepted Answer

Method 1: wrap a strip of paper around the base of your finger, mark where it meets to get the circumference, then divide by π for the diameter (the EU size). Method 2: use a jeweler's ring sizer. Measure mid-day — fingers are smaller after sleep and larger in the evening.

Question 2

What does "17.5" on a ring mean?

Accepted Answer

In the EU/Russian standard, the size is the ring's inner diameter in mm. A 17.5 ring fits a finger about 17–17.5 mm across. Typical sizes run 15–22 mm; women average 16–18, men 18–22.

Question 3

How do I convert a US size to the EU one?

Accepted Answer

US 7 → circumference = 7 × 2.56 + 36.5 = 54.42 mm → diameter = 54.42 / π ≈ 17.3 mm = EU 17.3. Roughly: US 5 = 15.7, US 6 = 16.5, US 7 = 17.3, US 8 = 18.2, US 9 = 18.9, US 10 = 19.8.

Question 4

What if a ring is too small or too large?

Accepted Answer

A jeweler can usually resize by 1–2 sizes — stretching a too-small ring or adding a small insert to a too-large one. Rings that resist resizing include eternity bands set with stones all around, engraved bands, and some alloys.

Question 5

What international ring-size standards exist?

Accepted Answer

EU uses the diameter in mm. US uses a numeric scale (about 5–15 with half sizes). UK uses letters A–Z with halves. Japan uses 1–27. The EU system — size equals inner diameter — is the most intuitive.

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