ONE PT900 0.5CT ROUND RING
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The ‘ONE’ ring features a commanding ~0.5ct round-cut lab-grown diamond set prominently to convey both dignity and refinement. The open-ended design introduces a sense of lightness and fluidity, while the slightly elevated setting lifts the diamond above the ring’s arc—enhancing its brilliance and visual impact.
This piece effortlessly balances classic sophistication with contemporary movement, making it a versatile choice for those who appreciate subtle architectural elegance. A certificate accompanies the ~0.5ct diamond.
Made to Order:
This ring is crafted to order and will be delivered approximately 30–40 days after purchase.
Details:
· Lab-Grown Diamond: approx. 0.5ct (round cut)
· Ring Band: approx. 2.5mm width × 2.5mm thickness
· Made in Japan
Ring Size Comparison Chart
| Size | JIS | US | UK | EU | GB・KS | ID (mm) | IC (mm) |
|---|---|---|---|---|---|---|---|
| 7 | 7 | 4.00 | H | 47 | 7 | 13.9 | 43.7 |
| 8 | 8 | 4.50 | I | 48 | 8 | 14.3 | 44.9 |
| 9 | 9 | 5.00 | J | 49 | 9 | 14.6 | 45.9 |
| 10 | 10 | 5.25 | K | 50 | 10 | 15.0 | 47.1 |
| 11 | 11 | 5.75 | L | 51 | 11 | 15.3 | 48.1 |
| 12 | 12 | 6.00 | M | 52 | 12 | 15.6 | 49.0 |
| 13 | 13 | 6.50 | N | 53 | 13 | 16.0 | 50.3 |
| 14 | 14 | 6.75 | N½ | 54 | 14 | 16.3 | 51.2 |
| 15 | 15 | 7.00 | O | 55 | 15 | 16.6 | 52.2 |
| 16 | 16 | 7.50 | P | 56 | 16 | 17.0 | 53.4 |
| 17 | 17 | 8.00 | Q | 57 | 17 | 17.3 | 54.3 |
※ JIS…Japan / US…United States / UK…United Kingdom / EU…Europe / GB・KS…China and South Korea
※ ID…Inner Diameter (mm) / IC…Inner Circumference (mm)
