








Constellation Diamond Ring
US |
EU | UK | Finger Circumference (mm) | Inner Diameter of Ring (mm) |
3 | 44 | F 1/2 | 44 | 14.1 |
3.5 | 45 | G | 45 | 14.5 |
4 | 46.5 | H 1/2 | 46.5 | 14.9 |
4.5 | 47.5 | I 1/2 | 47.5 | 15.3 |
5 | 49 | J 1/2 | 49 | 15.7 |
5.5 | 50 | K 1/2 | 50 | 16.1 |
6 | 51.5 | L 1/2 | 51.5 | 16.5 |
6.5 | 52.5 | M 1/2 | 52.5 | 16.9 |
7 | 54 | N 1/2 | 54 | 17.3 |
7.5 | 55.5 | O 1/2 | 55.5 | 17.7 |
8 | 57 | P 1/2 | 57 | 18.1 |
8.5 | 58 | Q 1/2 | 58 | 18.5 |
9 | 59.5 | R 1/2 | 59.5 | 18.9 |
9.5 | 61 | S 1/2 | 61 | 19.3 |
10 | 62.5 | T 1/2 | 62.5 | 19.7 |
*Blumoon uses US ring sizes
Experience the luxury and elegance of our Constellation Ring. Crafted with precision and care, this ring is the perfect symbol of love. Its timeless design and high-quality craftsmanship make it a cherished piece for generations to come.











Fair Pricing
Luxury without the markup. We offer high-quality jewellery at honest prices by cutting out traditional retail markups — making timeless pieces more accessible.

Signature Packaging
Each piece of jewellery is carefully packed in our signature case, placed within a sophisticated box, and accompanied by our signature bag.

Quality Materials
Every Blumoon piece is hand-crafted using premium materials — from solid gold to diamonds — ensuring durability, shine, and timeless elegance.