Moonstone Marquise Ring
A ring that fits well gets worn every day. One that doesn't tends to live in a drawer. The chart below covers UK, US and EU sizes, and the two methods underneath show simple ways to measure at home using things you already have. If you're unsure, email us at info@abiza.co.uk and we'll talk it through.
Ring size chart — UK, US and EU
| Inside diameter (mm) | UK size | US size | EU size |
|---|---|---|---|
| 14.0 | G | 3½ | 44 |
| 14.4 | H | 3¾ | 45 |
| 14.8 | I | 4½ | 46 |
| 15.2 | J | 5 | 47 |
| 15.6 | K | 5½ | 48 |
| 16.0 | L | 6 | 49 |
| 16.5 | M | 6½ | 50 |
| 16.9 | N | 7 | 51 |
| 17.3 | O | 7½ | 52 |
| 17.7 | P | 8 | 53 |
| 18.1 | Q | 8½ | 54 |
| 18.5 | R | 9 | 55 |
| 19.0 | S | 9¾ | 57 |
| 19.4 | T | 10¼ | 58 |
| 19.8 | U | 10½ | 59 |
| 20.2 | V | 11 | 60 |
| 20.6 | W | 11½ | 61 |
| 21.1 | X | 12 | 62 |
| 21.5 | Y | 12½ | 63 |
| 21.9 | Z | 13 | 65 |
How to measure your ring size at home
You don't need a ring sizer to get a reliable measurement. Two methods work well — pick whichever is easier with what you have to hand.
Method 1 — Measure a ring you already own
Find a ring that fits the right finger comfortably. Lay it flat and measure the inside diameter (edge to edge across the inside of the band) in millimetres using a ruler. Match that measurement to the chart above to find your size.
This is the most accurate method if you already have a well-fitting ring to copy.
Method 2 — Use a piece of string
- Take a piece of string, ribbon or thin paper strip.
- Wrap it around the base of the finger you want to size.
- Mark where it overlaps with a pen.
- Lay the string flat and measure the length
Rainbow moonstone doesn't need much to do its work. The marquise cut stone catches light and shows a soft blue-white flash — the adularescent effect that makes every moonstone unique — while three white topaz accents either side keep the setting dainty without competing. Available in gold or rose gold; both sit beautifully against the stone's cool shimmer.
Details
- Centre stone: Genuine rainbow moonstone — faceted marquise cut, 0.5 carats, 4×8mm, 4mm height
- Accent stones: 6 × white topaz (3 per side), 1.5mm each
- Setting: Cluster, 1.5mm band
- Gold finish: 18K gold vermeil over 925 sterling silver
- Rose gold finish: Rose gold vermeil over 925 sterling silver
- Sizes: UK J½ to R½ (US 5–9)
- Nickel-free
- Each moonstone has its own unique flash — same quality, never the same stone twice
- Presented in an Abiza gift box with crystal information card
Gold or rose gold?
The gold version adds warmth alongside the moonstone's cool blue-white flash — the contrast is part of the appeal. The rose gold version leans softer and more romantic, and tends to draw out the peach and pink tones that sometimes appear in rainbow moonstone. Both are vermeil: real gold plated over 925 sterling silver. Not sure about gold vermeil? Read our guide.
The stone — rainbow moonstone
Rainbow moonstone is a naturally occurring feldspar mineral that shows adularescence — a soft inner glow and blue-white shimmer that shifts as the stone moves in the light. No two stones are identical; the flash colour and intensity are unique to each piece. It's the June birthstone, traditionally associated with intuition, calm, new beginnings, and the Crown Chakra. The stone is natural and untreated — the rainbow effect comes from within the stone itself. For more on its history and meaning, read our Moonstone Meaning Guide.
Care
Moonstone has a natural flash that won't fade, but the surface can scratch with rough handling. Avoid prolonged contact with water, perfume, and lotion to preserve the vermeil finish and the stone's lustre. Store in the Abiza box when not worn. Clean gently with a soft damp cloth — no ultrasonic cleaners.
Browse the collection
- Moonstone Jewellery — bracelets, necklaces and earrings in the same stone
- June Birthstone Collection — moonstone and pearl together
- Moonstone Meaning & Properties — the full guide
- What Is Gold Vermeil? — about the gold finish
- Gemstone Rings — more natural stone rings
- All Rings
- You will receive our jewellery in our beautiful branded pouches, ready to gift.
- You can always ship it directly to the recipient.
- Ribboned gift box, and a gift note is available.
- Royal Mail Standard UK Delivery - £3
- Free Standard Delivery for UK orders above £60.
- UK Express Shipping is available at checkout for £6.
- Our packages are letterbox size and they don’t require a signature.
- Our delivery partners are Royal Mail, and DHL Express
- Returns are buyers' responsibility.
- Your order will be shipped via Royal Mail International Tracked and Insured services.
- For EU buyers, all taxes & import duties included.
- There will be absolutely no other charges for US buyers.
- For buyers from other countries UK taxes will be deducted at checkout. You may need to pay import charges locally. Please check your country requirements before ordering.
