Ring Size Guide & Diamond Carat Chart
Find the right ring size.
See your diamond in scale.
Two details shape how your LOYA ring will feel: the size around your finger and the presence of the diamond it carries.
Ring size guide
How to Measure at Home
There are two ways to find your ring size at home: with a strip of paper or with a ring you already wear. Measure at the end of the day, when your fingers are at their natural size, and avoid measuring when your hands are cold. If you fall between two sizes, choose the larger one. Still unsure? Contact us and we will help you find the right fit.
1. FIND YOUR RING SIZE WITH A STRIP OF PAPER
Measure your ring size with a strip of paper
No ring at hand? A simple strip of paper can help you find your size.
- Cut a thin strip of paper, approximately 10 cm long.
- Gently wrap the paper around the widest part of the finger you would like to wear your LOYA ring on. Make sure it feels comfortable, not too tight and not too loose.
- Mark the exact point where the two ends of the paper meet.
- Lay the strip flat and measure the distance from the beginning of the paper to your mark in millimetres.
- Use the size chart below to find the LOYA ring size that corresponds with your measurement.
A little tip: Your fingers can change slightly in size throughout the day. For the most comfortable fit, we recommend measuring at room temperature and repeating the measurement once or twice to make sure it feels right.
2. FIND YOUR RING SIZE WITH A RULER
Measure your ring size with a ruler
Already have a ring that fits perfectly? You can use it to find your LOYA ring size.
- Choose a well-fitting ring worn on the same finger you would like to wear your LOYA ring on.
- Place the ring on a ruler and measure the inside diameter at the widest point, from inner edge to inner edge.
- Write down the measurement in millimetres and use the size chart below to find the corresponding LOYA ring size.
A little tip: Make sure you measure only the inside of the ring and do not include the thickness of the ring itself.
Size Guide
Use the table below to find your perfect ring size for your LOYA ring.
| EU Size | US Approx. | Inner Diameter | Inner Circumference |
|---|---|---|---|
| EU 40 | US 1 | 12.7 mm | 40 mm |
| EU 41 | US 1½ | 13.1 mm | 41 mm |
| EU 42 | US 2 | 13.4 mm | 42 mm |
| EU 43 | US 2½ | 13.7 mm | 43 mm |
| EU 44 | US 3 | 14.0 mm | 44 mm |
| EU 45 | US 3¼ | 14.3 mm | 45 mm |
| EU 46 | US 3¾ | 14.6 mm | 46 mm |
| EU 47 | US 4 | 15.0 mm | 47 mm |
| EU 48 | US 4½ | 15.3 mm | 48 mm |
| EU 49 | US 4¾ | 15.6 mm | 49 mm |
| EU 50 | US 5¼ | 15.9 mm | 50 mm |
| EU 51 | US 5¾ | 16.2 mm | 51 mm |
| EU 52 | US 6 | 16.6 mm | 52 mm |
| EU 53 | US 6½ | 16.9 mm | 53 mm |
| EU 54 | US 7 | 17.2 mm | 54 mm |
| EU 55 | US 7¼ | 17.5 mm | 55 mm |
| EU 56 | US 7¾ | 17.8 mm | 56 mm |
| EU 57 | US 8 | 18.1 mm | 57 mm |
| EU 58 | US 8½ | 18.5 mm | 58 mm |
| EU 59 | US 9 | 18.8 mm | 59 mm |
| EU 60 | US 9¼ | 19.1 mm | 60 mm |
| EU 61 | US 9¾ | 19.4 mm | 61 mm |
| EU 62 | US 10 | 19.7 mm | 62 mm |
| EU 63 | US 10¼ | 20.0 mm | 63 mm |
| EU 64 | US 10¾ | 20.4 mm | 64 mm |
| EU 65 | US 11 | 20.7 mm | 65 mm |
| EU 66 | US 11½ | 21.0 mm | 66 mm |
| EU 67 | US 11¾ | 21.3 mm | 67 mm |
| EU 68 | US 12 | 21.6 mm | 68 mm |
| EU 69 | US 12½ | 22.0 mm | 69 mm |
| EU 70 | US 12¾ | 22.3 mm | 70 mm |
Diamond Carat Guide
Carat is weight.
Presence is what you see.
Two diamonds with the same carat weight can look different depending on their shape, proportions and cut. These measurements show the approximate face-up diameter of a well-proportioned round brilliant diamond.
0.40ct
≈ 4.8 mm
0.50ct
≈ 5.1 mm
0.70ct
≈ 5.8 mm
1.00ct
≈ 6.4 – 6.5 mm
1.50ct
≈ 7.3 – 7.4 mm
2.00ct
≈ 8.1 – 8.2 mm
2.50ct
≈ 8.8 – 8.9 mm
3.00ct
≈ 9.3 – 9.4 mm
3.00ct & up
Dimensions vary
(on request)
The circles are comparative and may not display at true physical size on every screen. Actual measurements vary by shape, depth, proportions and the final cutting result. Elongated shapes such as oval, pear and radiant may appear larger face-up than a round diamond of equal carat weight.
LOYA DIAMONDS
We will help you choose before your ring is made.
Whether the ring is for you or intended as a surprise, we can guide you through sizing, diamond scale, shape and setting so every detail feels considered.
A diamond from
Your Loved One
Authenticity
IGI-Certified Diamond
Creation time
4 – 6 Months
Personal memory space
MYLOYA