



The "Adult Sebonstar Swan Tiara Pendant" incorporates the popular Sebonstar item, the "Swan" design.
It is expressed with a carefully crafted design down to the smallest details, such as the elegant form of a swan gracefully embracing its wings and the delicate decorations reminiscent of a tiara.

The elegant silhouette of a swan and delicate tiara-like decorations are rendered in three dimensions.
A custom-cut gem is recreated at the center, and diamonds are set on the sides for a beautiful sparkle.

An elegant design with sparkling natural stones on the wings of the popular "swan" motif.

The bail is adorned with a diamond-studded tiara. Diamonds are also set in the swan's eyes.

The curves and decorative parts of the swan are solidly crafted with a three-dimensional feel. The design is beautiful from every angle.

With an elegant swan motif, the stone setting incorporates ballet shoes and ribbon decorations. By meticulously crafting every detail, the gorgeous world of the Swan Tiara is expressed. Furthermore, the top has a two-tiered setting structure to give it a three-dimensional feel, further enhancing the beautiful brilliance and color of the natural gemstone.

The three-dimensional swan motif, though small, makes a statement. While integrating into everyday life, the world of Sebonstar is faithfully recreated.

A custom-cut gem developed exclusively for this jewelry. The number, arrangement, and shape of the facets are inspired by authentic Sebonstar.
<Silver Model>
- Metal
- SV925
*Silver color is rhodium plated
- Sebonstar
Pear Shape Cut
Gemstone - Choose from 5 types
1. Almandine Garnet
2. Peridot
3. Amethyst
4. Citrine
5. Blue Topaz
Approx. 6mm x 4mm
- Sebonstar
- Side Stones
- Diamond (H&C) approx. 1.2mm x 1, 1.0mm x 1
- Price (incl. tax)
- ¥29,800
- Included Chain Size
- Approx. 40cm
- Motif Size
- Approx. 20.0mm (vertical), 12.0mm (horizontal)
<Precious Model>
- Metal
- Pt950
- Sebonstar
Pear Shape Cut
Gemstone - Choose from 5 types
1. Almandine Garnet
2. Peridot
3. Amethyst
4. Citrine
5. Blue Topaz
Approx. 6mm x 4mm
- Sebonstar
- Side Stones
- Diamond (H&C) approx. 1.2mm x 1, 1.0mm x 1
- Price (incl. tax)
- ¥198,000
- Included Chain Size
- Approx. 40cm
- Motif Size
- Approx. 20.0mm (vertical), 12.0mm (horizontal)

Special Sebonstar
Jewelry Case
Sebonstar is known for its hexagonal packaging. Faithfully recreating its appearance on candy shelves, we have prepared an elegant jewelry case suitable for adult Sebonstar. The suede-like fabric is accented with a logo.
You can also store your favorite rings and pendants together.
<Color Variations>
Light Blue
Presented with the purchase of one item
Size: Approx. 13cm x 4.5cm

Special Guarantee Card
Don't forget the chocolate that made your heart dance with Sebonstar.
We will include a special guarantee card shaped like chocolate, featuring motifs that excite a girl's heart: hearts, gems, and stars.
The back incorporates the package design that wraps the chocolate, filling every detail with the essence of Sebonstar.
One card will be included with each purchase of a Sebonstar collaboration jewelry item.
Size: Approx. 86mm x 26mm

Special Shopper Bag
We have prepared a special original shopper bag perfect for carrying your Adult Sebonstar jewelry.
When purchased at the KARATZ STORE, one bag will be included with each jewelry item purchased.
Size: Approx. 26mm x 65mm
*Packaging methods may vary depending on the sales store. We appreciate your understanding.
Sebonstar x KARATZ collaboration jewelry
will be exhibited and sold (made-to-order) for a limited time
at the KARATZ Pop-up Store in Akihabara.
- Period: July 30 (Thu) - August 2 (Sun)
-
Location: 2k540 AKI-OKA ARTISAN
Private Event Space (C-1)
(5-9 Ueno, Taito-ku, Tokyo)
*Under the elevated tracks between Akihabara and Okachimachi Stations on the Yamanote Line -
Business Hours: 11:00 - 19:00
*First day (July 30) opens at 13:30
Last day (August 2) closes at 18:00 -
Content: Sebonstar x KARATZ
Collaboration jewelry exhibition
and sales (made-to-order)

The adult Sebonstar jewelry uses colorful gems, including those directly purchased by gemologists from around the world.
To faithfully reproduce Sebonstar's characteristic cuts, we engaged in repeated trials and discussions with skilled Indian craftsmen specializing in gem handling, ultimately achieving a satisfactory quality.
We carefully selected D-G color, H&C diamonds equivalent to VS class for the side stones. VS class refers to gems with excellent transparency, where only minute inclusions can barely be seen under 10x magnification by an expert grader.
For color, we strictly select only those in the top four grades out of 23: from the highest D color (completely colorless) to the G color (nearly colorless, with a faint yellowish tint difficult to detect with the naked eye).
Furthermore, H&C (Heart & Cupid) refers to diamonds that display heart and arrow shapes when viewed through a special viewer due to light reflection. We've poured our heart into every detail, even those difficult to notice at first glance.
These gems are crafted into jewelry by highly skilled artisans. Their expertise, honed over years of experience, made this collaboration possible.
Please enjoy authentic jewelry that only KARATZ, a specialty gem store, can deliver.
The first Adult Sebonstar was created
to commemorate Sebonstar's 45th anniversary.
The jewelry in the first collection features a heart-cut gem, selected as the No. 1 choice by approximately 12,800 votes.
Inspired by the Sebonstar logo, we have prepared pendants and rings.

A premium Charmmy series featuring round-cut gems.
Inspired by the Sebonstar logo, we have created elegant and gorgeous pendants
that incorporate the Charmmy Compact design.


Kabaya Foods' toy confectionery, a long-seller since its launch in 1979.
Inside the distinctive elongated hexagonal box, there is an original pendant accessory and chocolate (as of 2024). It is loved as "jewels from the candy aisle" due to its cute design and wide range of color variations.
In 2024, it celebrates its 45th anniversary and continues to be loved by not only young girls who adore sparkle but also by adult women.



Since its establishment in 2017, KARATZ has been a company that continuously disseminates information about gems with the desire for "many people to acquire correct knowledge about gems" and "to be a place where anyone can easily consult about gems."
In addition to publishing the book "Gemstone Encyclopedia," our "KARATZ Gem Magazine" (https://karatz.jp/) is used by many people as one of the largest specialized gem information media in Japan (approximately 150,000 monthly visitors).
We also sell a wide variety of gems at various price points, sourced from around the world, on our specialized gem e-commerce site, KARATZ STORE (https://store.karatz.jp/).
In particular, we want children to feel familiar with gems from a young age, so we hold gem classes for children and parents at elementary schools and commercial facilities, and also sell gem polishing kits that parents and children can experience together, and gem playing cards that allow them to learn while playing.
We are also highly regarded for the abundance of gems we handle, with our representative personally traveling to various parts of the world, such as Sri Lanka and Thailand, to procure gems directly on-site.
Regarding cuts that enhance the appeal of gems, we partner with skilled polishing artisans both in Japan and overseas to offer special cuts and KARATZ's original cuts.
With hundreds of thousands of gems purchased annually, we offer a wide lineup that satisfies everyone from beginners experiencing gems for the first time to collectors.
Furthermore, we also create custom-made jewelry using beautiful gems sourced from all over the world. Leveraging the high technical skills and craftsmanship of experienced Japanese artisans with decades of experience in jewelry processing, we bring all kinds of designs to life.































