Adult Sebonstar

The gemstones we specialize in are from India,
We carefully selected and purchased them in Sri Lanka, and after much trial and error, we reproduced the cut of Sebon Star. Furthermore, in order to express the "excitement" that Sebon Star has,
After detailed discussions with skilled craftsmen in Japan ,
I designed jewelry.

We will deliver jewelry befitting your memorial year.

"Adult Sebonstar" is the embodiment of one's aspirations.
The jewelry, which was voted number one by approximately 12,800 people, is based on the Sebonstar logo.
Pendant and ring available.
You can choose your favorite familiar gemstone for the heart part.

Adult Sebonstar Jewelry [Silver Model] & [Precious Model]

Based on the Sebonstar logo, the design combines the classic heart motif with a ribbon, appealing to the feminine heart.
The exquisite Sebonstar heart-cut gemstone is complemented by dazzling diamonds, creating a pendant that embodies the essence of Sebonstar.

The harmony of two colors. In the precious model, the silver colored parts can be changed to yellow gold or pink gold.
The delicate ribbon decoration is like a tiara, with a diamond in the center measuring approximately 1.5mm.
You can enjoy it together with the adjuster charm featuring the familiar chocolate motif. *For more details, click here
Sebonstar jewelry, which is made with attention to detail, will beautifully decorate your chest.
A special pink jewelry case inspired by hexagonal packaging.

<Silver model>

Price (incl. tax)

29,800 yen
Bullion

SV925 & gold plated
Heart cut gemstones

Choose from 5 types
1. Almandine Garnet
2. Peridot
3. Amethyst
4. Citrine
5. Blue Topaz approx. 5mm x 5mm
Side stone

Diamond (VS class equivalent D to G color, H&C) *For more information , click here
Approximately 1.5mm x 1 stone, approximately 1mm x 2 stones
Chain size included

Approximately 40cm
Motif size

Length: approx. 13.8 mm, width: approx. 13.0 mm

＜Precious Model＞

Price (incl. tax)

98,000 yen
Bullion

Choose from 3 types for the inside of the heart only
1. Pt950
2.K18YG (yellow gold)
3.K18PG (pink gold)
*The ribbon and heart edging and chain are all made of K18YG.
Heart cut gemstones

Choose from 5 types
1. Almandine Garnet
2. Peridot
3. Amethyst
4. Citrine
5. Blue Topaz approx. 5mm x 5mm
Side stone

Diamond (VS class equivalent D to G color, H&C) *For more information , click here
Approximately 1.5mm x 1 stone, approximately 1mm x 2 stones
Chain size included

Approximately 40cm
Motif size

Length: approx. 13.8 mm, width: approx. 13.0 mm

Adjuster Charm

We have prepared a playful adjuster charm featuring the familiar chocolate motif.
This is an option available only to customers who purchase the pendant.

Size: Approx. 12.5mm x 4mm
Silver model: SV925 & gold plating 15,800 yen (tax included)

*The adjuster charm cannot be purchased separately.
*The adjuster charm is only available in silver model.
*The adjuster charm is not included as a bonus for purchasing each product.

Adult Sebonstar Jewelry [Silver Model] & [Precious Model]

The design is based on the Sebonstar logo and combines the classic heart motif with a ribbon, appealing to the feminine heart.
The gemstone is intricately cut in the shape of a heart, and the sparkling diamonds complement it. The ring has a classically curved arm that beautifully decorates your hand, and is made with attention to detail.

A classical and gorgeous ring arm. Luxuriously finished using plenty of precious metal.
The ring arm is designed to resemble the end of a ribbon, resembling the feathers of an arrow.
You can adjust the size.
*This product is delicate. Please be careful when adjusting it yourself.
Jewelry filled with the essence of Sebonstar will add a touch of glamour to your hands.
A special blue jewelry case inspired by hexagonal packaging.

<Silver model>

Price (incl. tax)

29,800 yen
Ring Size

S (approximately size 5 to 10)
M (approximately size 11 to 16)
L (approximately size 17 to 22)
LL (approximately size 23 to 26)

The ring is adjustable in size.
*Please be careful when changing the size as applying too much force may result in damage.
Bullion

SV925 & gold plated
Heart cut gemstones

Choose from 5 types
1. Almandine Garnet
2. Peridot
3. Amethyst
4. Citrine
5. Blue Topaz approx. 5mm x 5mm
Side stone

Diamond (VS class equivalent D to G color, H&C) *For more information , click here
Approximately 1.5mm x 1 stone, approximately 1mm x 2 stones
Motif size

Length: approx. 13.8 mm, width: approx. 17.2 mm
(Varies according to ring size)

＜Precious Model＞

Price (incl. tax)

98,000 yen
Ring Size

Choose from size 7 to size 25 in 0.5 size increments
Bullion

Choose from 3 types for the inside of the heart only
1. Pt950
2.K18YG (yellow gold)
3.K18PG (pink gold)
*The ribbon, heart edging, and ring arm are all standard K18YG specifications.
Heart cut gemstones

Choose from 5 types
1. Almandine Garnet
2. Peridot
3. Amethyst
4. Citrine
5. Blue Topaz approx. 5mm x 5mm
Side stone

Diamond (VS class equivalent D to G color, H&C) *For more information , click here
Approximately 1.5mm x 1 stone, approximately 1mm x 2 stones
Motif size

Length: approx. 13.8 mm, width: approx. 17.2 mm
(Varies according to ring size)

This premium jewelry uses the round B cut, which received the most votes .
We have created an elegant and gorgeous pendant that incorporates the Charmy Pact design with the Sebonstar logo as its motif .
This pendant is luxurious yet playful.

Adult Sebonstar Jewelry [Charmy Premium Model]

The Charmy Precious model, adorned with a pigeon blood ruby, is a special, top-quality pendant among Sebonstar jewelry for adults.
This ring is limited to one piece and features first-class gemstones such as diamonds, pink diamonds, and Akoya pearls as side stones.
*Lottery sales are planned.

Adult Sebonstar Jewelry [Charmy Precious Model]

An elegant and charming precious model with blue sapphire and tanzanite in the center.
Diamonds and white sapphires are used as side stones to complement the round cut gemstones.
*Limited quantity.

Adult Sebonstar Jewelry [Charming Silver Model]

The Charmy Silver model has a luxurious appearance but is also designed for everyday use.
You can choose your favorite from a lineup of approximately nine different round cut gemstones.

*Specifications are subject to change.
*Details regarding price and size will be announced around January 2025.
*Scheduled to go on sale in late February 2025.
*The premium model will be sold by lottery.
*The precious model and silver model will be sold in stores and by order.
*Some items are available in limited quantities.
*There are no plans to resell the adult Sebonstar Jewelry [Silver Model] and [Precious Model] that were released in September.
Please note that we will not be able to respond to individual inquiries.

The collaboration jewelry uses colorful gemstones, including those directly purchased by gemologists from all over the world. In order to faithfully reproduce the distinctive cut of Sebonstar, we directly communicated with skilled Indian craftsmen who are skilled in handling gemstones, and after much trial and error, we arrived at a satisfactory quality.
The diamonds used as side stones are carefully selected from VS class equivalent D to G color, H&C. VS class is a grade used by experts to grade diamonds, where even the most minute inclusions can be just barely seen under 10x magnification, and they have good transparency. Of the 23 grades, only those from the highest grade D color (completely colorless and transparent) to the fourth grade G color (near colorless, with a yellowish tinge that is difficult to detect with the naked eye) have been carefully selected.

In addition, H&C (Hearts & Cupid) is a diamond with a heart and arrow shape that can be seen in the reflection of light. We have put a lot of attention to detail into the details that are hard to notice at first glance.
These gemstones are turned into jewelry by skilled Japanese craftsmen, whose techniques have been honed through years of experience, making this collaboration a reality.
Enjoy the authentic jewelry that only a jewelry specialty store like KARATZ can provide.

Special Sebonstar jewelry case

Sebonstar is known for its hexagonal packaging. We have created an elegant jewelry case that faithfully reproduces the way it is displayed in the candy section, and is suitable for adult Sebonstar. The suede-like fabric is accented with a glittery logo.
You can also store a combination of your favorite rings and pendants.

<Color options>
Pink: Receive a gift with the purchase of one pendant Blue: Receive a gift with the purchase of one ring Purple: Receive a gift with the purchase of one of the premium jewelry items to be released at a later date [Charmy Precious Model] or [Charmy Silver Model] Size: Approx. 13cm x 4.5cm

*Customers who place an order at the event venue can take this case home with them. The jewelry will be delivered in a separate case. (Distribution will end once the planned number is reached. The jewelry case will be included with the product.)

Special guarantee card

Don't forget to get some chocolate to make your heart dance with Sebonstar.
We will include a special guarantee card designed to resemble chocolate, with hearts, jewels, stars and other motifs that will tickle the hearts of young girls.
The back side incorporates the packaging design that encases the chocolate, and the essence of Sebonstar is packed into every detail.
This item will be included with each purchase of a piece of Sebonstar collaboration jewelry.

Size: Approx. 86mm x 26mm

Special Shopper

We have prepared special original shoppers that are perfect for carrying Sebonstar jewelry for adults.
When purchasing at the Caratz Store, one gift card will be included with each piece of jewelry purchased.

Sebonstar x KARATZ collaboration jewelry will be exhibited and sold for a limited time at the KARATZ pop-up store in Ginza Mitsukoshi .
For the first time, our store will be showcasing authentic Sebonstar jewelry made with real gemstones .
In addition, past series and packaging will be on display, looking back on the history of Sebonstar's 45th anniversary .

Period: September 25th (Wednesday) - October 1st (Tuesday)
Location: Ginza Mitsukoshi Main Building 3rd floor Le Place Promotion
Opening hours: 10am - 8pm
Contents: Exhibition and sale of Sebonstar x KARATZ collaboration jewelry

Ginza Mitsukoshi exclusive special clear drink holder

A special clear drink holder is available only at the KARATZ pop-up store in Ginza Mitsukoshi.
We have created a clear appearance that fits perfectly in our special jewelry case, so that you can take it home with you in a happy mood.
This gift will be given to the first 50 customers who purchase the collaboration jewelry.
Size: Approx. 26mm x 65mm

*The collaboration jewelry to be exhibited and sold at the pop-up store will only be the silver model and the adjuster charm. As stock is limited, once the stock runs out, they will only be sold at the Caratz store.
*The collaboration jewelry will be available for pre-order from 10:00 AM on Wednesday, September 25th at the KARATZ official online store.

Kabaya Foods' candy toys have been a long-selling hit since their release in 1979.
The distinctive, vertically long hexagonal box contains original pendant accessories and chocolates (as of 2024), and due to its cute design and wide range of colors , it has become known as the "jewel of the candy section."
It will celebrate its 45th anniversary in 2024.
This product has long been loved not only by girls who love sparkly things, but also by grown women.

Since its founding in 2017, Carats has been providing information about gemstones with the hopes of "helping many people acquire correct knowledge about gemstones" and "being a place where anyone can feel free to ask questions about gemstones."
In addition to publishing the book "Gemstone Encyclopedia," we also operate "KARATZ Gem Magazine" ( https://karatz.jp/ ), which is one of the largest gemstone information media in Japan and is used by many people (approximately 150,000 visitors per month).
In addition, the jewelry specialty online store Karatz STORE ( https://store.karatz.jp/ ) sells a wide variety of jewelry at various price ranges sourced from all over the world.

In particular, we want children to become familiar with gemstones from an early age, so we hold gemstone classes for children and their parents at elementary schools and commercial facilities, and we also sell gemstone polishing sets that parents and children can try out together, and gemstone playing cards that allow children to learn while they play.

The company is also well-known for the wide variety of gemstones it handles, and the president himself travels to various parts of the world, including Sri Lanka and Thailand, to purchase gemstones directly from the local area.

Regarding cuts that bring out the beauty of gemstones, we partner with polishers not only in Japan but also overseas, and sell special cuts and original cuts that are only available at Caratz.
We purchase hundreds of thousands of gems each year, and offer a lineup that will satisfy a wide range of customers, from beginners who are experiencing gems for the first time to collectors.
We also create custom-made jewelry using beautiful gemstones sourced from all over the world. We utilize the high technical skills and craftsmanship of skilled Japanese artisans with decades of experience in jewelry processing technology to create a wide range of designs.