Custom Jewelry
Made to order with your story, idea and specifications in mind.
Tokyo · Okachimachi
Crafting Fine Jewelry with Precision and Innovation
Custom jewelry, 3D modeling and expert craftsmanship in Tokyo Okachimachi for over 20 years.
想いを形に、技術で未来をつくる。
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Custom Jewelry · Tokyo
KAWAHIRO JEWELRY
Where Tradition Meets Technology
Based in Tokyo Okachimachi, KAWAHIRO specializes in custom jewelry that combines traditional craftsmanship with modern digital production. From the first sketch to the final polish, every piece is shaped with precision and care.
Explore Our Craft→3D Modeling
Rhino, Matrix, 3Design and ZBrush based digital jewelry design.
3D Printing
High-resolution prototyping and digital production technology.
Casting
Brass, silver, gold and platinum casting for precise production.
Stone Setting
Fine setting work designed to highlight each stone and detail.
Finishing
Polishing, plating and final finishing by experienced craftsmen.
WORKS & DESIGN
From First Sketch to Final Form
KAWAHIRO’s official archive shows the dialogue between hand-drawn concepts, digital modeling and finished jewelry.
Official Archive ↗
Jewelry Sketch
Concept Development
Color Study
Fine Detail
CRAFT × TECHNOLOGY
Precision in Every Stage
Our service covers the complete path from design and modeling to prototyping, casting, stone setting and surface finishing.
DesignSketching, concept planning and custom jewelry development.
Digital3D modeling with Rhino, Matrix, 3Design and ZBrush.
Prototype3D printing, wax milling and hand wax carving.
ProductionMolding, casting, polishing, stone-setting and plating.
KAWAHIRO AI · JEWELRY INTELLIGENCE
Imagine it. We make it real.
AI helps shape the first idea. KAWAHIRO designers and craftsmen turn it into jewelry that can truly be made.
KAWAHIRO×AICraftsmanship · 3D · Artificial Intelligence
AI Jewelry Designer
Turn a story, occasion or visual preference into a first design direction.
AI Concierge
Guide customers through materials, production options, budgets and next steps.
Smart Quote
Collect key specifications and prepare a clearer quotation brief for the KAWAHIRO team.
Sketch to Concept
Use sketches and references as the starting point for an AI-assisted concept conversation.
KAWAHIRO.AI / PROTOTYPE
AI Jewelry Designer
Choose a few preferences. This prototype generates a design direction and inquiry brief — the final design remains reviewed by KAWAHIRO.
CONCEPT VISUALNot production CAD
01 / AI CONCEPTREADY
Tokyo Quiet Light
A low-profile platinum form with a restrained blue center stone and architectural lines inspired by Tokyo minimalism.
- TYPE
- Ring
- MATERIAL
- Pt950
- STYLE
- Tokyo Minimal
- TARGET BUDGET
- ¥100K–250K
AI proposes. Craftsmen decide.
KAWAHIRO AI is positioned as a concept and communication layer. Manufacturability, CAD engineering, stone setting, tolerances and final production remain under professional review.
PROCESS
From Concept to Creation
A seamless process combining craftsmanship and digital production — from consultation and design through prototyping, production and delivery.
01
✦
Inquiry
Share ideas and requirements.
02
✎
Design
Sketch and plan the concept.
03
◇
3D Modeling
Precision CAD development.
04
▣
Prototype
Print, mill and refine.
05
◈
Production
Cast, set and finish.
06
→
Delivery
Final inspection and delivery.
MATERIALS & TECHNOLOGY
Premium Materials. Precision Technology.
Casting is available in brass, 925 sterling silver, 9K–24K yellow, white and rose gold, as well as 950 platinum.
Gold
9K · 10K · 14K · 18K · 24KSilver
925 Sterling SilverPlatinum
950 PlatinumDigital Manufacturing
CAD · 3D Printing · Wax MillingCONTACT / QUOTE
Start a New Jewelry Project
Tell us about your idea, material, quantity, preferred delivery schedule or reference files. This static-site form opens your email application with the inquiry details prepared.
Tokyo, Japan
Okachimachi