Pink sapphire · Custom ring
OEM & ODM GEMSTONE JEWELRY MANUFACTURER
Custom gemstone
jewelry.
OEM and ODM jewelry manufacturing in Panyu, Guangzhou, China. Develop 18K gold rings and earrings with natural or lab-grown colored gemstones, from one finished piece.
Custom jewelry from one pieceNatural & lab-grown gemstones
CRAFTED AROUND YOUR DESIGN
18K gold. A color that's yours.
Since 2018Gemformia Jewelry
1 pieceCustom orders welcome
Natural + lab-grownTwo gemstone options
Panyu, GuangzhouChina · Design, cutting & setting
A CLOSER LOOK AT OUR WORK
Custom rings & bracelets.
Explore our custom gemstone rings and bracelet designs.
Use these samples as a starting point for your own design.
Aquamarine · Custom rings
Royal blue gemstone · 18K gold
Textured metalwork · Made to order
Yellow jadeite · Custom rings
Royal blue gemstone · Custom ring
EXPLORE JEWELRY SAMPLE GUIDES
Three-stone ring sample Pink sapphire ring sample Aquamarine ring samples Textured bracelet samples Yellow jadeite ring samples Royal blue halo ring sampleOur photographs show sample work. Stone specifications, metal, size, price and availability are confirmed for each custom project.
FIND THE RIGHT STARTING POINT
Choose your jewelry
or gemstone project.
From a first custom piece to a dimensioned cutting brief, choose the service that matches what you want to develop.
01 / EXPLORE OUR SERVICES
Custom 18K gemstone rings
Choose a gemstone and setting, share the ring size and develop your own ring from one finished piece.
Explore this service02 / EXPLORE OUR SERVICES
Lab-grown emerald jewelry
Plan a ring or pair of earrings around lab-grown emerald dimensions, 18K gold and your preferred style.
Explore this service03 / EXPLORE OUR SERVICES
Your first custom piece
Start with one design for your brand, shop or studio. Review the first piece before discussing a wider collection.
Explore this service04 / EXPLORE OUR SERVICES
From CAD, sketch or photo
Send your current design reference, materials and dimensions for a finished jewelry project review.
Explore this service05 / EXPLORE OUR SERVICES
Gemstone cutting and polishing
Share your material, shape, millimeter dimensions and quantity. Loose-stone work is assessed and quoted separately.
Explore this service06 / EXPLORE OUR SERVICES
18K gold jewelry customization
Discuss rings, earrings and bracelet designs with our Panyu team. Confirm metal, stones, finish and fit for your project.
Explore this serviceYOUR DESIGN. YOUR OWN PIECE.
Custom gemstone jewelry
from one piece.
Gemformia is a custom gemstone jewelry manufacturer in Daluotang, Panyu, Guangzhou, China. We bring design development, gemstone processing and stone setting together for your project.
Start with one finished piece. Send a CAD file, a sketch or a reference photo, and we will review the stone, metal, size and design with you before production.
Explore custom 18K gemstone ringsYOUR DESIGN OR AN IDEA TO DEVELOP
OEM & ODM
gemstone jewelry.
Work with Guangzhou Only You Jewelry Co., Ltd. in Daluotang, Panyu, Guangzhou, China. Choose the starting point that matches your design and business.
01 / OEM MANUFACTURING
Make your agreed design
Send your CAD drawing, STL file or established design reference. We review the gemstone, metal, dimensions, setting and finish before agreeing the manufacturing specifications.
Prepare an OEM design brief02 / ODM DEVELOPMENT
Develop the idea with us
Start with a sketch, reference photograph or brief and budget. Our team works through design development, drawing or 3D modeling and the proposal for your finished gemstone piece.
Explore ODM development03 / START WITH ONE PIECE
A first piece for your brand
Finished custom jewelry starts from one piece. We’ll work to complete your custom piece as soon as possible and confirm the timeline with you before production. Shipping and loose-stone processing are assessed separately.
Plan a small-batch projectA PRACTICAL NEXT STEP FOR YOUR BUSINESS
Where should your
jewelry project start?
Choose the route closest to your business. We will review the design, materials, quantity and budget with you.
01 / START SMALL
Small businesses & new brands
Start with one finished custom piece to review the design before building a collection.
- Send a reference photo or sketch of the piece you want to make.
- Share your preferred gemstone, metal and target production budget.
- Review the first piece before planning additional styles or quantities.
02 / SERVE YOUR CUSTOMERS
Jewelry stores & boutiques
Develop gemstone rings and earrings around your customers’ style, sizes and budget.
- Send a customer brief or a few style references.
- Specify stone materials, ring sizes or earring dimensions.
- Discuss a focused collection, or arrange a workshop visit with an English-speaking host in Panyu, Guangzhou.
03 / REVIEW BEFORE YOU LIST
Online stores & marketplace sellers
Review a physical custom sample before preparing your product listing or planning a collection.
- Tell us your sales channel and the styles you want to offer.
- Choose natural or lab-grown stones and review the metal, size and setting details.
- Confirm the sample specifications before planning your next order.
04 / DEVELOP YOUR DESIGN
Jewelry designers & studios
Turn your design into a finished gemstone piece with our design, cutting and setting team.
- Share a CAD or STL file, hand sketch or reference image.
- Provide gemstone dimensions and the setting and finish you have in mind.
- Review the design, quotation and schedule before manufacturing.
From one finished piece
Start small with custom jewelry. Loose-stone quantities and cutting requirements are quoted separately.
Timeline agreed with you
We’ll work to complete your custom piece as soon as possible and confirm the timeline with you before production. Timing depends on the design, materials and manufacturing requirements. Complex designs may take longer; shipping time is additional.
A simple first inquiry
A reference image and a short description are enough to start the conversation. A CAD file is optional.
Each project is quoted after review. Your design, stone material, dimensions, metal and quantity determine the proposed work and price.
BEFORE THE SETTING, THE STONE
Custom gemstone
cutting & polishing.
The character of a piece begins with its gemstone. Our cutting team works with natural and lab-grown colored stones, shaping them to suit your design.
- Natural & lab-grown colored gemstones
- Precision shaping and polishing
- Standard and specialty cuts
- Dimensions reviewed for your setting
See our gemstone workshop
Take a look inside our cutting and polishing department in Panyu, Guangzhou.
Watch our gemstone cutting video
PEOPLE BEHIND THE PIECES
Jewelry manufacturing
in Panyu, Guangzhou.
Meet the people behind the finished jewelry.
Real teams. Our own photographs.
Design & development
From a sketch to a considered design.
Gemstone cutting
Shaping color, proportion and light.
Stone setting
Each stone, carefully placed.
Order coordination
Keeping the details connected.
Design, gemstone processing and jewelry setting, connected by one team.
English-speaking staff available for factory visits by appointment.
Watch our stone-setting team
Meet our stone-setting team and see where they work.
MADE AROUND YOUR IDEA
How custom jewelry
is made.
Bring a CAD file, a reference photo or a sketch.
We'll work through the details with you.
We’ll work to complete your custom piece as soon as possible and confirm the timeline with you before production. Timing depends on the design, materials and manufacturing requirements. Complex designs may take longer; shipping time is additional.
Agree on the design
Share the reference, stone, metal, jewelry size, quantity and budget. We review your requirements and confirm the proposed design and project scope.
Draw & model
Hand drawing and 3D modeling develop the design into a production reference. Review the details with our team before the piece moves forward.
Cast & set
Master model making, casting, filing or trimming, gemstone processing and stone setting bring the agreed design into its finished form.
Polish & inspect
Polishing, electroplating where specified, and final quality inspection complete the piece. Our team coordinates the agreed delivery and after-sales follow-up.
GUANGZHOU GEMFORMIA JEWELRY CO., LTD.
Based in Panyu,
Guangzhou, China.
Established in 2018, Guangzhou Only You Jewelry Co., Ltd. is based in Daluotang, Panyu District, Guangzhou, Guangdong, China, within the Guangdong-Hong Kong-Macao Greater Bay Area. We work on custom colored gemstone jewelry and precision gemstone processing for jewelry and watchmaking.
Our work spans natural gemstones and lab-grown colored gemstones, connecting material selection, creative design, precision shaping, polishing and stone setting. Craftspeople with more than ten years of experience bring specialist skills to this work.
We connect product development, sales coordination, production and after-sales support. Whether you need one personal piece or are developing a collection, our team works with you from the first design discussion through production and delivery.
Let's discuss your design ↗Plan a visit to Panyu, Guangzhou
Discuss your design, materials and project details with our team. An English-speaking host can be arranged by appointment.
THE PEOPLE, MATERIALS & PROCESS BEHIND YOUR PIECE
Why choose Gemformia
for custom jewelry?
Gemstone expertise, a connected production process
and a team in Guangzhou's jewelry manufacturing hub.
Craftspeople with 10+ years of experience
Our experienced craftspeople shape gemstones to the required dimensions and polish them to a mirror finish, with attention to how each stone will fit the jewelry design.
Natural & lab-grown colored gemstones
Discuss both material routes with one team. We review the stone type, color, shape and setting requirements around the piece you want to make.
Development through after-sales support
Product development, sales coordination, manufacturing and after-sales support stay connected. Design reviews, production follow-up and final inspection support consistent workmanship and the agreed schedule.
The Daluotang jewelry supply chain
Our location in Panyu brings us into a concentrated jewelry manufacturing community. Guangzhou's transport and port connections support the coordination of import, export and overseas customer orders.
GEMSTONE SUPPLY EXPERIENCE
Jewelry, luxury & watchmaking
Our gemstone supply experience spans international luxury and jewelry brands, Chinese watchmakers and leading U.S. TV shopping platforms.
- Swarovski
- Prada
- Fiyta
- Seagull
DOCUMENTATION FOR YOUR GEMSTONE PROJECT
Gemstone Reports
& Certificates.
Review example reports for natural colored gemstones and laboratory-grown diamonds. Tell us which reports and documents you need when discussing your custom project.
AIGS
Asian Institute of Gemological Sciences
Natural ruby identification report
Example report showing gemstone identification, origin and treatment information.
Open full-size reportGIA
Gemological Institute of America
Ruby report
Example ruby report showing gemstone identification and treatment results.
Open full-size reportGUILD
GUILD Gemological Laboratory
Natural emerald report
Example report with origin and clarity-enhancement information for a natural emerald.
Open full-size reportIGI
International Gemological Institute
Laboratory-grown diamond report
Example report showing laboratory-grown origin and diamond grading details.
Open full-size reportEach report applies to the stone identified in that report. Confirm your gemstone details and reporting requirements with our team before ordering.
What does Gemformia customize?
Gemformia develops colored gemstone jewelry, including custom rings, earrings and bracelet designs. Our team in Panyu, Guangzhou combines jewelry design development, gemstone processing and stone setting. Materials, dimensions and construction are reviewed for each project.
Where is Gemformia located in China?
Guangzhou Only You Jewelry Co., Ltd. is based in Daluotang, Panyu District, Guangzhou, Guangdong, China. Contact our team in advance to confirm the details of a workshop appointment.
What is the minimum order for finished custom jewelry?
Finished custom jewelry starts from one piece. Tell us the design, stone material, metal, size and quantity so we can review the project and prepare an individual quotation.
Does the one-piece minimum apply to loose gemstone cutting?
Loose-stone quantities, dimensions and processing schedules are assessed and quoted separately. The starting quantity for finished jewelry does not establish the minimum order or lead time for loose stones.
How long does a complete custom jewelry project take?
We’ll work to complete your custom piece as soon as possible and confirm the timeline with you before production. Timing depends on the design, materials and manufacturing requirements. Complex designs may take longer; shipping time is additional.
Can I choose natural or lab-grown colored gemstones?
Yes. Specify the gemstone type and whether you require natural or lab-grown material, together with the shape, dimensions and preferred appearance. Stone suitability, material information and availability are confirmed for your project.
Can I start a custom project without a CAD drawing?
Yes. Send a reference photograph or hand-drawn sketch and describe the piece you want to develop. Include CAD drawings or an STL file if available, together with the stone, metal, finished size, quantity and budget where known.
What information do you need for a quotation?
Start with your name, email and a short message; a phone or WhatsApp number is optional. Describe the design, gemstone and metal requirements, dimensions, quantity, destination and working budget where known. You can send drawings and reference images by email or WhatsApp.
How is the custom jewelry price calculated?
The quotation depends on the gemstone, metal, dimensions, design complexity, workmanship and quantity. We review the actual project requirements before confirming a price; sample photographs do not establish a price or stock availability.
Do you offer OEM and ODM gemstone jewelry manufacturing?
Yes. OEM projects start with your existing design and agreed production specifications. ODM projects develop a finished gemstone jewelry proposal from your sketch, reference photo or brief and budget. Finished custom jewelry starts from one piece, with a timeline agreed before production.
Can you arrange an English-speaking host for a workshop visit?
Yes. Contact us in advance with your preferred date and project details. An English-speaking host can be arranged by appointment at our workshop in Daluotang, Panyu, Guangzhou, China.
LET'S CREATE SOMETHING PERSONAL
Start your
custom jewelry project.
Send us your idea. Tell us what matters to you, and we'll help define the next step.
EMAIL OUR TEAMservice@onlyyouhk.com ↗
WHATSAPP+86 173 2403 7112 ↗
OUR LOCATION IN CHINADaluotang, Panyu District
Guangzhou, Guangdong, China
Guangzhou, Guangdong, China
Have drawings or reference images?
You can send them directly by email.