Because our products are intended to be order-made, where we take the customer's choice of design, material, size and other options that may be available and make the piece specifically for that customer, it may take several weeks from the date of your order until the item is completed and ready for shipping. For approximate shipping dates, please refer to each ring design page.

The price of engagement rings can vary slightly based on your center diamond requirements and our stock status, so the NIWAKA Online Store only displays price examples. If you would like to know the specific price, please contact us by clicking the "Inquire About this Ring" button on the engagement ring design page.

Center diamonds used in NIWAKA engagement rings are available in colors graded from D to G, clarity graded from FL (Flawless) to SI1 (Slightly Included) and Triple Excellent cut. If you would like to know more about our diamonds, please visit the Diamond Guide page.

As diamond stocks are limited, you can choose a diamond from Your Personalized Diamond Listing and purchase an engagement ring until the designated expiration date only. After the expiration date, the listing will not be available.

To check the expiration date, please refer to the email titled "Your Personalized Diamond Listing". If you are still within the time frame, please click the URL in the email to access your listing, select a center diamond and add the ring to your Shopping Bag. Availability dates are also shown on Your Personalized Diamond Listing page.

If you would like to place an order after the listing has expired, please contact us again by clicking the "Inquire About this Ring" button on the engagement ring design page.

Unfortunately, there is no option to select the carat weight or grade of melee diamonds. NIWAKA settings are carefully designed to account for the size and carat weight of the center diamond; because of this, the parameters of melee diamonds are predetermined. In addition, for certain engagement ring designs the size of the center diamond may affect the total carat weight of melee diamonds, which is why the choice is made by our professional craftsmen.

No, NIWAKA does not sell ring settings and diamonds separately.

Unfortunately, it is not possible to set a customer's diamond into a NIWAKA ring.

No, NIWAKA does not offer such a service.