The price for DIY engagement ring workshop is determined by the size of diamond (carat) and the addition of secret stone on the ring. The choice of metal (e.g. platinum and 18k gold) poses no influence on the final cost. You may choose the size of the diamond after taking a closer look at our atelier.

0.2 carat (3.8mm± in diameter)

¥120,000 (before tax)

A 0.2-carat diamond sufficiently brings out the brilliance of the engagement ring. It acts as an accent to special occasions such as dinners, parties and holidays, and is befitting for everyday wear.

0.3 carat (4.3mm± in diameter)

¥170,000 (before tax)

A 0.3-carat diamond, slightly larger and with a broader head, leaves an augmented impression on the finger.

0.5 carat (5.0mm± in diameter)

¥360,000 (before tax)

A 0.5-carat diamond for an engagement ring is a luxurious choice. This diamond size is a showstopper that fills one with envy.


Add a secret stone inside the ring!
+ ¥5,000 per stone (before tax)

January — GarnetFebruary — Amethyst
March — AquamarineApril — Diamond
May — EmeraldJune — Moonstone
July — RubyAugust — Peridot
September — SapphireOctober — Tourmaline
November — CitrineDecember — Tanzanite
Laser Engraving Other than hand engraving methods, we also provide professional laser engraving services. You may choose your desired font type and decide on the content of engraving, such as your names and anniversary date. As this technique takes time, the finished product may only be available for collection at a later date. Please feel free to check with us.


Select size
hidden 1.5mm diamond on the inner wall of the ring (¥5,000)
Select the engraving method
Total (Before Tax)¥