Please check out my new website

You can easily send me a message or inquiry with "contact" button of my new website www.sakurakoshimizu.com

About custom waveform ring
The custom process takes at least two months to deliver your ring. I can make and ship internationally.

Two ring styles - flat ring or comfort fit (curved top) ring

Available material - 18K white,  palladium white, yellow, red and pink gold
                                 14K white, yellow and pink gold.

Please feel free to contact me for any questions. I can send you the price list and detail information about the process.

These are some of the rings I made for my client.
Curved surface 18K palladium white gold and 18K pink gold ring

Flat 14K pink gold ring

curved surface 14K yellow gold ring



My waveform brooches "Wow" Sneeze" and "Yawn" are currently presented in "Out of Hand- Materializing the Postdigital"at Museum of Art and Design in NYC from October 16, 2013 to June 1, 2014.



My waveform brooches "Wow" Sneeze" and "Yawn" are added to the collection of Museum of Art and Design in NYC.

They will be a part of an exhibition "Wear it or Not - Recent Jewelry Acquisitions"
from Tuesday, March 12, 2013 to Sunday, June 2, 2013   

My waveform brooches were written up in The Daily Beast.com


Jewelry for Network Administrators

"Jewelry for Network Administrators" (2012) is a collaboration with the new media artist Marcin Ramocki. It consists of 12 wearable pieces of silver jewelry based on online diagrams of computer network topologies. It will be on display at Spazio Ultra (Udine, IT) until Jan. 19 2013. All pieces are available in small editions of 3.

Ring Topology Bracelet, 2012

Fully Connected Mesh Topology, brooch, 2012

Cloud Download and Upload Pins, 2012

Open Mesh Topology Necklace, 2012

Tree Topology Necklace, 2012


Server Farm Pendant, 2012                                                          Server and User Pin, 2012

Installation view of "Jewelry for Network Administrators" at Spazio Ultra.

Photography by Pierluigi Buttò
Special thanks to Stefano Monti, Chiara Moro and Pierluigi Buttò.


New waveform ring - Slightly curved ring

Now I make waveform ring with 3D printing and casting method instead of laser-cutting techniques.

The benefit of this process is that a ring will be created as one piece, making it more durable for everyday wear as a wedding band. This method allows creating different ring design and adjusting thickness. (Design options and ring thickness were limited with laser-cutting techniques.)

    This sample is 14karat white gold ring
    8mm wide / size 10.75 and 6.5mm wide / size 7


Waveform wedding ring (flat ring)

Waveform rings is available in silver, 18karat and 14Karat white, red, and yellow gold, and platinum.

I stopped making palladium ring due to the fragility of the fabricated part. Also it is a very soft metal and gets scratches very easily.

Ring width: 6mm-8mm wide ( Wider ring is available by request)

(Samples) from left:
silver ring, 7mm wide, size 11
18K yellow gold ring, 7.5mm wide, size 11 1/4
18K pink gold ring, 6.5mm wide, size 6 1/4

Please email me for any question or a request for more detail information and recording instruction.
You can record any words and phrases, not necessarily "I do"


I can now offer custom waveform jewelry and wedding rings with your sound/voice.
Please email me: info@sakurakoshimizu.com for more details.


"I Do" Wedding Band

sample ring in Palladium (Male ring) and 18K yellow gold (female ring)
Palladium is no longer available

Custom made wedding bands with waveform of couple's own voices.
"I Do" Ring offers a unique opportunity to own a timeless representation of your partner's voice.

Any words can be recorded to make a ring.
Available in silver, 18K and 14K white/yellow/red gold, platinum.

Please email me for more details info, prices, and schedule. International order is possible.

100% recycled gold and precious metals are used for the rings.

This test pieces was made with some gold rings from my mother. I melted them.


1981 ATARI Ring

This man's ring features a precise cast of the original Atari computer chip out of 18 karat gold.
2008, available in 18 Karat yellow or white Gold
Edition of 10


Waveform Series 2007 - Current

All works are laser-cut and hand fabricated.

"Waveform Series" consists of laser-cut shapes of various sounds, rendered in silver, gold or other precious metal and presented as wearable jewelry.

Human expressions such as yawn, sneeze, or giggle were used for earlier pieces. "Bell" is a silver cuff bracelet adorned with a waveform of church bell.

Bell (Cuff Bracelet): Silver, dimension: about 7x5,5cm oval, 3.7cm high
Male and female sizes are available.

Installation View: In the exhibition context this project included a DVD player and a monitor: the audience could enjoy both the object and the actual video of sound wave played back.

Giggle (Necklace): silver, dimension: 5 x45cm

Giggle (Detail view)

Wow (Brooch): Oxidized silver, dimension: 9x4cm

Sneeze (Brooch): silver, dimension: 8.5x3cm

Yawn (Brooch) : silver, dimension: 8x3cm

3 Brooches (from top, Wow, Yawn, Sneeze)

Left ear & Right ear (earrings): silver, dimension:2x3.5cm


limited edition Lingo Pins

I made these limited edition Lingo Pins for the 3rd anniversary benefit party of vertexList gallery. Since vertexList shows mostly computer related works, I used programming terms from Lingo (Lingo is a programming language for Director. Director is a software for multi-media authoring).

Year: 2006, Material: Nickel silver, Dimension: approx.6mmx7-25mm


art-jewelry-idea -beads

All possible ideas used for the work of art jewelry since the 60's are stamped.
(in some cases, it's divided into several beads.)

Year: 2006, Material: Silver, Dimension: Necklace form: 68cm (27insh) length
Beads: (various sizes): 14-27mm diameter.



This piece is a conceptual pun on the “HEAD” tag in HTML. Wearer’s actual head is placed between “open” and “close” tags.

Year:2006, Material:silver,

The title is same as the one shown as the earings. the tag symbol cannot be displayed in the title above.
Textured finish



This is a physical representation of the HTML code needed to display a word "Jewelry" via internet browser. The tags were laser-cut out of sterling silver and connected as a necklace.

The tag symbol is not displayed properly in the title above because it is one of the code.

Available in silver or 18K gold.



Jewelmark Series

Necklace is not available. Only earring similar to #6 with flexible links is available.

Year:2005, Material: Rubber sheet, sterling silver
Description: hand-cut parts connected, flexible to various shapes
Necklace #1, #5 has a pin on the necklace top to fix it on a preferable position.
Jewelmark Series #1, Dimension: 320x150 mm

This necklace was included in "500 necklaces: Contemporary Interpretations of a Timeless Form", by Lark Books

Jewelmark Series #5, Dimension: 320x180 mm

detail view

Jewelmark Series #7, Dimension: 290x120 mm

detail view

Jewelmark Series #6, Dimension: 60x30 mm


Charm Bracelet Brooch

Year:2003, Material: rubber sheet , silver / hand cut

Charm bracelet has a strong commercial image as a souvenir or a gift in our times. I made this piece for a curated exhibition "Charmed Lives" at Facèrè Jewelry Art Gallery in Seattle. I tried to create a fresh image about this traditional jewelry form. I found its silhouette as a strong decorative image. The flexible material, rubber adds the playfulness to it. Dimension: 10x9 cm

This piece was featured in the article, “Trinket to Talisman: Contemporary Charms”, by Vicki Halper, Metalsmith, vol.25 fall 2004


Color Circles (42 brooches)

Year: 2002,
material: flags of 189 countries, rhodium plating on sterling silver (structure) and copper (the back of the discs). Stainless steel (pin back).

Dimension: five different sizes and three different shapes. 6x5.7cm, 4.6x4.3cm, 4x4cn, 4.2x3.7cm, 6x4cm

The fabric of the flag is wrapped around a flat metal like a button. The disc is set in a fabricated silver structure with a double pin on the back. The structure is rhodium plated to prevent from tarnish of silver. The Rhodium plated copper disc is glued on the back of each button.

This piece is in collection of Samuel Dorsky Museum of Art.

Cover page of the German craft magazine, KUNSTHANDWERK &DESIGN, January/February 2003