New Jewelry by Akoya Keshi Pearl and Lab-grown Diamonds, Fusion of Nature and Technology "K+D Fusion" now on pre-sale at Makuake

O's Creation Japan K.K. (Kanazawa-ku, Yokohama; Contact: Osamu Matsuura), which has been involved in the jewelry world for 20 years, has introduced a new jewelry line, "K+D Fusion by Gizany".

Keshi pearls, a shellfish nurtured by nature, and lab-grown diamonds created by modern science. Combining these two opposing materials and boldly designing the necklace "without a frame," it is a completely new category of jewelry that brings out the beauty of the materials themselves to the fullest.

K+D Fusion" is currently on sale on the crowdfunding site "makuake" until July 5, 2026 (Sun.).

▼Makuake project page

https://www.makuake.com/project/kdfusion/

Heading of Macuake

■ Introduction - About this project.

Pearls and diamonds.

Both are beautiful, have a long history, and are symbolic of jewelry.

Now, however, jewelry is becoming a distant object due to the soaring prices of precious metals. We take advantage of this situation and propose a new form of jewelry that accentuates the beauty of the original material by minimizing the use of metals.

Jewelry that allows you to enjoy the "beauty of the material itself" in everyday situations.

We also aimed for a "new luxury" in a standard style that can be used for a long time.

The result is "K+D Fusion",

The fusion of Akoya keshi pearls born of nature and lab-grown diamonds born of technology.

A "new luxury" that offers a brightness without boundaries to everyday life.

Wearing scene image

Our commitment to materials: Rare keshi pearls and pure lab-grown diamonds

The necklace uses keshi pearls (1 to 1.5 mm), which are one of the few Akoya pearls in circulation. These small pearls, which do not have a nucleus and are grown in their natural state, give each pearl a different expression, radiating a warmth and elegant luster that cannot be found in mass-produced pearls. The drilling and threading of these extremely small pearls is a delicate job done by hand by skilled craftsmen, one by one.

Drilling a hole for each 1mm keshi pearl by hand

Keshi pearls are made from Akoya shells. Natural pearls with no nucleus.

Hanging in the center is a pear-shaped lab-grown diamond (available in three sizes: 0.30ct/0.50ct/1.00cts). While the chemical and physical properties are identical to natural diamonds, they boast stable high quality (F color up, VS to SI1 up). The reason for adopting our diamonds is not "because they are inexpensive," but because of the transparency of their quality and our empathy for their sustainable background. 

Pearl and lab-grown diamond Necklace

0.3ct, 0.50ct and 1.00cts side by side.

■"No frame", a reversal of the original idea.

Usually, a precious metal frame is required to hold a diamond. However, K+D Fusion uses a method in which a through-hole is drilled in the diamond using a laser and a keshi pearl thread is threaded directly through it. The absence of a frame allows the diamond's original brilliance to stand out, creating a light and modern impression.

The only precious metal used is the necklace hardware, made of Japanese platinum 850, which is resistant to tarnishing and designed to last for a long time.

The metal findings for the spring ring and tag are made of platinum.

Recommended for

Those who want to enjoy the quality of the material rather than excessive decoration.

Those who feel that the same jewelry as others is not enough for them.

Those who are looking for a necklace that can be used for both daily life and special occasions.

Those who want to enjoy pearls and diamonds with "the values of the times".

Actual usage scenarios

The brilliance of one large carat has a strong presence.

This necklace can be worn on or off. Jewelry for daily use.

The way to wear it showing the bottom of the diamond is also fresh and new.

The 0.30 ct.

Light and light, it is a size that blends in with everyday life. Beautifully balanced with small keshi pearls. It is easy to match with both formal and casual wear.

The 0.50 ct. is well-balanced.

For those who seek more presence. The vertical line of the diamond stands out and gives a solid shine to the chest.

1.00cts is the star of the show.

The large 1-carat stone has a strong presence. The vertical lines of the diamond stand out and give it a solid shine, as you would expect from a 1 carat stone.

Specifications

Material: Akoya keshi pearls (1 to 1.5 mm): Made in Japan

　　　　　　　　　　 Lab-grown diamonds (pear shape): India

Diamond quality : F color up/ VS-SI1 up

Size : 0.30ct / 0.50ct / 1.00cts

Findings: Platinum 850 (spring ring, tag, jump rings) made in Japan

Diamond : Laser through-hole processing (without frame)

Total length of necklace: approx. 38-40 cm (choker size)

Note: *About changing the string of pearls

　　　　 As with ordinary pearl necklaces, the string may remain unchanged d              uring normal wear.

　　　　 However, depending on the frequency of heavy use, it may be                         necessary to change the thread. Please contact us.

　　　　 In principle, there is a charge for this service, although it depends on              the condition of use.

　　　　*Clarity of the lab-grown diamonds

　　　　  Clarity evaluation before laser piercing is described.

Schedule

Production will begin as soon as the project is completed. Returned items will be shipped from the end of August to the end of September.

Project start date: May 31, 2026 (Sun.)

Project end date: July 5, 2026 (Sun.)

Returned goods : Will be shipped by the end of September 2026.

In the event of any irregularities, we will promptly report them in the activity report.

■About Returns

We have prepared special prices.

Super Early Bird Discount Limited to 10 items each Price including tax

0.30ct lab-grown diamond ... 49,000 yen

0.50cts lab-grown diamond ... ¥70,000

1.00cts lab-grown diamond ... ¥97,000

Early Bird Offer Limited to 10 pieces each, price includes tax

0.30ct lab-grown diamond ... ¥55,000

0.50ct lab-grown diamond ... ¥75,000

1.00cts lab-grown diamond ... ¥105,000

Regular Makuake price Limited to 10 pieces each, price including tax

0.30ct lab-grown diamond ... ¥60,000

0.50ct lab-grown diamond ... ¥80,000

1.00cts lab-grown diamond ... ¥112,500

Below are the list prices (including tax). Please make a support purchase at the above return prices.

0.30 ct + keshi pearl + platinum  List price 80,000 yen

0.50ct + keshi pearl + platinum  List price 110,000 yen

1.00cts + keshi pearl + platinum List price 150,000 yen

Comment from Matsuura

I have been involved in the jewelry business for half a century both in Japan and abroad. During that time,  I have always been thinking about "What is the pleasure of jewelry? And I have been looking at the "universal value" and the "value that reflects the times" that jewelry has. We have been observing the trend of lab-grown diamonds (including overseas) for more than 10 years. We believe that the time has finally come for us to strongly recommend it domestically.

Company Profile

O's Creation Japan Ltd.

Representative: Osamu Matsuura

Location: 2-6-14 Nishishiba, Kanazawa-ku, Yokohama, 236-0017, Japan

Establishment: April 2006

Business description: Wholesale of wedding rings made by forging,

　　　　　 Design, production, and evaluation of original jewelry