It takes four to five weeks in production. If you want to present the ring during your marriage proposal, we suggest you start preparing around two to three months before your proposal. Generally, people buy the ring around seven months to one year before their wedding day.

Yes, you can. Some people give necklace that can be worn everyday instead of an engagement ring for marriage proposal. I-PRIMO has diamond necklace collections for you to choose from.

Yes, eternity ring is a popular choice for engagement ring as it has the meaning of eternal and forever.

You can choose a diamond based on the 4Cs grading of a diamond, budget and your desired diamond grade. I-PRIMO only sells excellent brilliance diamonds that are suitable for making jewelry pieces. Please choose your dream ring from us with confidence.

4Cs is the standard criteria for diamond grading. They are carat (weight), color, clarity and cut. For details, please click here › View More

We mainly use platinum (Pt950) in our jewelry pieces as platinum is the best precious metal to show the brilliance of diamonds. However, customers can also choose 18K rose gold or gold for their rings.

ven though you may not know your girlfriend’s ring preference or ring size and you find it difficult to find out from her, you are welcome to entrust your case to us. I-PRIMO provides special services that you are able to confirm the design and size of engagement ring after your proposal. We aim at helping you to propose in the way with no hassle and worries. We are experienced to serve clients who come to our stores alone, and will use our best knowledge to assist and support you on your marriage proposal planning. For details about our “Marriage Proposal Support Service”

We are sorry that diamond outside of I-PRIMO will not be entertained for I-PRIMO jewelry settings.

I-PRIMO adopts stringent standard on the quality of diamond. All diamond has international recognized certificate issued by trustworthy organizations such as GIA and Japanese grading organizations (limited to diamond weighted 0.2ct or above).

If we can find a ring you like, as well as in the right size, you can bring it home directly on the same day. However, if you need to alter the ring size or engrave letters, it may take around 3 weeks to complete. We suggest you come and choose your ring earlier.

Men and women can choose different styles to create their unique wedding ring combination! As everyone has different hand shapes, we first provide a personal hand shape analysis, and customers can then choose their preferred styles based on personal preference. Even if they are from different series, it is still possible to find the most matching combination. Additionally, I-PRIMO customizes exclusive wedding rings based on customers' preferences, sizes, and engraving content.

Depending on the style, the general sizes are from size 3 to size 19. Special sizes can be made from size 1 to size 2 and size 20 to size 30 (general sizes for women's styles are from size 3 to size 15, and for men's styles from size 3 to size 19). Special sizes require additional charges and sometimes take longer to produce than general sizes.
※Ring sizes are in Japanese sizes.
※ Some styles cannot be made in special sizes. For details, please consult the shop advisor.