





Blue Sapphire 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
Crafted in 14k white gold, this statement ring features a 0.68 crt lab-grown sapphire flanked by a trio of lab-grown diamonds on each side. This timeless vintage-like design will bring sophistication to any look.








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.
