FAQFrequently Asked Questions

It contains the results of the diamond's quality appraisal.
Each of the 4Cs (carat, clarity, cut, and color), which determine the diamond's value, are evaluated to ensure that the diamond is natural.
icci can issue a certificate of authenticity from CGL (Central Gemological Laboratory) for 5,000 yen (excluding tax).

Yes, of course it is possible.
Since we are here, let's come up with a great design that makes the most of the diamonds you have!

A certificate of quality is attached to every ring. Please be assured that it clearly states that the diamond is natural.
Diamonds of 0.1 ct (approx. 3 mm in diameter) or larger can be accompanied by a certificate of authenticity as proof of authenticity (optional fee).

Heart and drop shapes are available upon request. Please let us know what size and shape you would like when you make a reservation.
We will do our best to meet your request.
Please note that only a professional craftsman can make a shaped diamond frame. Please note that this is an optional fee.

The value of a diamond is determined by the 4Cs, which are cut, carat, clarity, and color.
Cut is the precision of the polish, carat is the weight, clarity is the transparency of the diamond, and color is the color of the diamond, the closer to colorless and transparent the better.
We offer diamonds at reasonable prices, mainly 0.2 to 0.3 ct, D to F color, VS class, VeryGood to Excellent cut diamonds, which are considered suitable for bridal. We can also order diamonds of various shapes, sizes, and grades according to your budget and design. Please contact us for more information.

We also deal in colored diamonds such as blue diamonds and pink diamonds.
Please note that depending on the design, it may take longer to match multiple diamond colors.
Prices are also subject to change due to market fluctuations and other factors, so please contact us for a quote first.

結婚指輪、婚約指輪のサイズ直し（サイズ縮め）は、保証書の日付から2年以内は1回無料です。サイズ伸ばしは有料にて承っております。（シルバーリングはサイズ縮めもサイズ伸ばしも有料。）

The most popular are those that are relatively simple, but have a little essence that is unique to the couple.
Also, since they are worn all the time, rounded, handmade, and warm designs that fit comfortably in the hand are more popular than edgy designs.
In many cases, women decide on a design based on the fact that it will be stacked with their engagement ring.

icciでは結婚指輪と婚約指輪を同時に作ることで、重ねづけのデザインも考えながら作ることができます。

はい。ご自身がイメージする指輪のデザインをぜひお持ちください。職人が細かく打ち合わせいたします。