US$50–2,000 budgets
We work with budgets ranging from US$50 to US$2,000. Tell us your budget so we can discuss suitable options. Each quotation depends on the design, materials, dimensions and quantity.

OEM & ODM GEMSTONE JEWELRY MANUFACTURER
Work with our gemstone jewelry factory in Panyu, Guangzhou, China. We develop OEM, ODM and private label 18K gold jewelry for brands, jewelry stores, online sellers and designers. Start with one custom sample to review the design, materials and craftsmanship. Once you approve the sample, we can arrange bulk production to the agreed specifications. Start with an STL or STEP file, a CAD drawing, a sketch, a design image or a screenshot.
YOUR PROJECT, PERSONALLY SUPPORTED
Share a photo, an idea or a hand-drawn sketch. We will help you develop it into a finished piece, with a reply to your inquiry within 24 hours.
We work with budgets ranging from US$50 to US$2,000. Tell us your budget so we can discuss suitable options. Each quotation depends on the design, materials, dimensions and quantity.
Work one-to-one with our team. We can provide CAD design with up to two rounds of minor revisions to refine your piece.
A non-disclosure agreement (NDA) is available for your project. Ask us to arrange it before sharing confidential designs or project details.
We accept international bank transfers via SWIFT. Our team will provide payment instructions for your confirmed order.
Get a Free Quote One-to-one support · Reply within 24 hours
Send the reference you already have. Our Panyu, Guangzhou team can start with a 3D file, a design image, a hand-drawn sketch, a photograph or a screenshot, then review the details for your finished gemstone jewelry.
Share your STL or STEP file, the intended dimensions and material requirements. We review the model, stone fit and construction before production.
Send a digital design or concept image. Tell us which proportions, gemstone details and finishes you want to develop.
A clear hand sketch is enough to begin. We help develop the drawing and CAD details for you to review.
Start with a reference photograph or screenshot. Mark the details to keep or change and share the finished size you have in mind.
No CAD file yet? A clear image or sketch is enough for the first discussion. We confirm the design, dimensions, materials and manufacturing requirements with you before production.
A CLOSER LOOK AT OUR WORK
Explore our custom gemstone rings and bracelet designs.
Use these samples as a starting point for your own design.
Pink sapphire · Custom ring
A pink sapphire ring with a rectangular center stone and surrounding accents. Share your preferred stone dimensions, ring size, metal and setting details for a custom quotation.
Aquamarine · Custom rings
Aquamarine ring designs with pale blue center stones. Discuss the stone shape, dimensions, ring size, metal and setting you would like to develop.
Royal blue gemstone · 18K gold
An 18K gold ring with a royal blue center stone and side accents. Stone material, dimensions, ring size and setting details are confirmed for your individual project.
Textured metalwork · Made to order
Bracelet designs with textured surfaces and decorative details. Discuss your preferred pattern, wrist size, dimensions and metal before we confirm the proposed customization.
Yellow jadeite · Custom rings
Yellow jadeite ring designs with warm-colored center stones. Share your preferred stone dimensions, ring size, metal and surrounding details for an individual review.
Royal blue gemstone · Custom ring
A royal blue gemstone ring with a surrounding halo. Discuss the center stone material and dimensions, accent details, metal and ring size with our team.
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.
THE GEMFORMIA JOURNAL
Practical guides from our jewelry factory in Panyu, Guangzhou, to help you plan your next custom piece.
Understand Gemformia's product references, from GRL-S925-09 to GRN-G18-09, and specify the stone, metal and design for your custom jewelry project.
Read the ArticleFIND THE RIGHT STARTING POINT
From a first custom piece to a dimensioned cutting brief, choose the service that matches what you want to develop.
01 / EXPLORE OUR SERVICES
Choose a gemstone and setting, share the ring size and develop your own ring from one finished piece.
Explore this service02 / EXPLORE OUR SERVICES
Plan a ring or pair of earrings around lab-grown emerald dimensions, 18K gold and your preferred style.
Explore this service03 / EXPLORE OUR SERVICES
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
Send your current design reference, materials and dimensions for a finished jewelry project review.
Explore this service05 / EXPLORE OUR SERVICES
Share your material, shape, millimeter dimensions and quantity. Loose-stone work is assessed and quoted separately.
Explore this service06 / EXPLORE OUR SERVICES
Discuss rings, earrings and bracelet designs with our Panyu team. Confirm metal, stones, finish and fit for your project.
Explore this serviceFinished custom gemstone jewelry starts from one piece. Develop a personal commission, review the first piece for your store, or begin a small-batch collection for your brand.
Share your reference, stone, metal, size, quantity and working budget. We review the project and prepare an individual quotation.
Check the agreed dimensions, gemstone appearance, setting and finish before deciding on further quantities or variations.
Plan additional sizes, designs or a small production run. Materials, pricing and schedules are confirmed for the next order.
The one-piece starting quantity applies to finished custom jewelry. Loose gemstone cutting and supply quantities are assessed separately.
YOUR DESIGN OR AN IDEA TO DEVELOP
Work with the Gemformia team in Daluotang, Panyu, Guangzhou, China. Choose the starting point that matches your design and business.
01 / OEM MANUFACTURING
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
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
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 projectWe work with jewelry stores, boutiques, online shops, marketplace sellers, independent brands and design studios. Bring us a customer order, a first sample or a collection brief.
Send your customer's design reference, ring size and material preferences. Develop a custom piece or discuss a focused collection for your store.
Develop a physical sample for your online shop. Confirm the stone, metal, fit and finish before planning your product listing or next order.
Discuss OEM, ODM or private label jewelry, including your design direction, brand logo and packaging requirements.
Bring an STL or STEP file, a sketch or an image. Work with our design, gemstone processing and setting team on the finished piece.
We welcome custom jewelry projects from Asia, Europe, the Americas, Africa and Oceania. Tell us your destination so we can review your design, production and delivery requirements together.
Send your STL or STEP file, design image, sketch or screenshot by email or WhatsApp. We confirm the materials, measurements, design and quotation with you before manufacturing.
Tell us your country, postal code and target date. We confirm the production schedule, supported shipping options and costs separately, including the agreed handling of destination duties and taxes.
BEFORE THE SETTING, THE STONE
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.
Take a look inside our cutting and polishing department in Panyu, Guangzhou.
Watch our gemstone cutting videoPEOPLE BEHIND THE PIECES
Meet the people behind the finished jewelry.
Real teams. Our own photographs.
From a sketch to a considered design.
Shaping color, proportion and light.
Each stone, carefully placed.
Keeping the details connected.
Design, gemstone processing and jewelry setting, connected by one team.
English-speaking staff available for factory visits by appointment.
Meet our stone-setting team and see where they work.
Start with the information you have. We work through the design, materials and manufacturing requirements together before making your piece.
An STL or STEP file, design image, hand sketch, photograph or screenshot. Include your intended size, quantity and budget where known.
Discuss CAD or design development, gemstone dimensions, metal and construction. Confirm the proposal and quotation before production.
Our team coordinates the agreed modeling, casting, gemstone processing, setting and finishing stages for your design.
The finished piece is checked against the agreed project details. We confirm delivery arrangements and provide a contact for after-sales support.
Production timing depends on the design, materials and quantity and is confirmed before work begins. Shipping time is additional.

GEMFORMIA · PANYU, GUANGZHOU
Our company was established in 2018 and is based in Daluotang, Panyu District, Guangzhou, Guangdong 511400, 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.
Guangzhou address
Rooms 401–402, 4/F, Building 2
No. 2 Yinjian Road, Daluo Industrial Zone
Panyu District, Guangzhou, Guangdong 511400, China中国广东省广州市番禺区大罗工业区银建路2号2栋4楼401—402室,邮编:511400
Discuss your design, materials and project details with our team. An English-speaking host can be arranged by appointment.
MEETING OUR CUSTOMERS · GUANGZHOU 2020
From December 25–27, 2020, our team exhibited at the Guangzhou International Live Streaming Industry Expo, held in Area B of the Canton Fair Complex in Guangzhou.
At booth 11.3F47, we shared our jewelry with visitors and introduced our work in person. We took part as Guangzhou Only You Jewelry Co., Ltd., the company behind Gemformia.

Our team sharing jewelry with visitors at booth 11.3F47 during the 2020 Guangzhou expo.

Our exhibitor pass for the December 2020 event at the Canton Fair Complex, Area B, Guangzhou.
Read the official venue’s English event listing for the exhibition dates, halls and organizer.
THE PEOPLE, MATERIALS & PROCESS BEHIND YOUR PIECE
Gemstone expertise, a connected production process
and a team in Guangzhou's jewelry manufacturing hub.
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.
Discuss both material routes with one team. We review the stone type, color, shape and setting requirements around the piece you want to make.
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.
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
Our gemstone supply experience spans international luxury and jewelry brands, Chinese watchmakers and leading U.S. TV shopping platforms.
DOCUMENTATION FOR YOUR GEMSTONE PROJECT
Review example reports for natural colored gemstones and laboratory-grown diamonds. Tell us which reports and documents you need when discussing your custom project.
Asian Institute of Gemological Sciences
Natural ruby identification report
Example report showing gemstone identification, origin and treatment information.
Open full-size reportGemological Institute of America
Ruby report
Example ruby report showing gemstone identification and treatment results.
Open full-size reportGUILD Gemological Laboratory
Natural emerald report
Example report with origin and clarity-enhancement information for a natural emerald.
Open full-size reportInternational 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.
Design, materials, samples, pricing and delivery.
Yes. Gemformia accepts finished custom gemstone jewelry projects starting from one piece, including initial samples and small-batch orders. Send your design, gemstone requirements, metal, size and quantity so we can assess the project and prepare a quotation. Loose gemstone cutting is quoted separately.
Yes. Gemformia manufactures custom 18K gold gemstone rings and earrings in Panyu, Guangzhou, China. Share your reference design, preferred gemstone, dimensions and quantity. We review the materials and construction requirements before confirming the quotation and production timeline.
Yes. Gemformia develops custom lab-grown emerald jewelry. Send your preferred design, stone shape and dimensions, preferred metal, finished size and quantity. We confirm stone availability, suitability and manufacturing requirements for each project before quoting.
Yes. You can start with an STL or STEP file, a CAD drawing, a design image, a hand-drawn sketch, a photograph or a screenshot. Tell us which details you want to keep or change, along with the gemstone, metal, size and quantity. We review the design and discuss any construction changes needed before production. CAD design is available with up to two rounds of minor revisions.
Send a reference image, sketch or CAD file if available, together with the gemstone type, whether you prefer natural or lab-grown material, preferred metal, finished size, quantity and delivery destination. Include your target budget and required delivery date if known. If some details are undecided, describe your idea so we can identify what needs to be confirmed. Quotations are free, and we reply to inquiries within 24 hours.
Yes. Specify the gemstone type and whether you require natural or lab-grown material. Include the shape, dimensions and preferred appearance. We confirm material information, availability and suitability for your design before proceeding.
The timeline depends on design complexity, gemstone availability, materials and manufacturing requirements. Share your design, quantity and required delivery date so we can review the schedule. We confirm the production timeline before work begins; shipping time is additional.
Yes. Contact us in advance to arrange a workshop visit and an English-speaking host. Our address is Rooms 401–402, 4/F, Building 2, No. 2 Yinjian Road, Daluo Industrial Zone, Panyu District, Guangzhou, Guangdong 511400, China. Share your preferred visit date and project details when booking.
Yes. You can start with a sample and review it before proceeding with a batch order. Sample fees depend on the specific design. We confirm the approved materials, dimensions, workmanship, quantity, quotation and production schedule before batch production.
Yes. We can add your brand logo and provide branded packaging. Send your logo artwork, preferred placement and packaging requirements. We confirm feasibility, specifications, pricing and any quantity requirements for your project before production.
Yes. We accept customer-supplied gemstones. Share the stone type, dimensions, quantity and clear photographs before shipping the stones. We review suitability for the design and confirm handling and shipping arrangements with you in advance.
Yes. Gemstone reports and metal purity testing can be arranged for your project. Tell us which stones, metals and documents you require. We confirm the available laboratory or testing provider, scope, fees and timing before ordering. Each report applies only to the item identified in that report.
We serve international customers, mainly in Europe and North America, and can arrange DHL delivery to supported destinations worldwide. Share your delivery country and postal code so we can confirm shipping availability and costs. Import duties and taxes depend on the destination country; applicable charges and arrangements are confirmed for your order.
Sample fees depend on the specific style, materials and manufacturing requirements. We accept bank transfers, including international transfers via SWIFT. CAD design can include up to two rounds of minor revisions. We confirm the sample quotation, payment arrangements and revision scope before starting.
Pricing depends on the gemstones, metal, dimensions, design complexity, workmanship and quantity. We work with budgets ranging from US$50 to US$2,000 and discuss options that suit your requirements. Each project is quoted individually; sample photographs do not establish a fixed price or stock availability.
Yes. Gemformia offers custom gemstone cutting and polishing. Send the gemstone material, required shape, dimensions and quantity for review. Minimum quantities, pricing and processing schedules are assessed separately from finished jewelry orders.
Yes. OEM projects start from your existing design and agreed specifications. ODM projects develop your idea, sketch or reference image into a proposed design. We provide one-to-one project support, and a non-disclosure agreement (NDA) is available. Ask us to arrange it before sharing confidential designs or project information. For private label projects, share your brand requirements, gemstone and metal choices, dimensions and quantity. Our Guangzhou team reviews the design, manufacturing and any branding requirements before confirming a quotation.
Get help with your delivered piece and discuss the next steps.
Contact your project representative, email service@onlyyouhk.com or message our WhatsApp at +86 173 2403 7112. Include your order reference, a description of your request and relevant photographs so our team can review the details with you.
Contact our team with your order reference, clear photographs or a video of the item, and a description of the issue. For delivery damage, also keep the packaging and share photographs of it. We will review the information and discuss the next steps with you. Contact us before sending any item back so the return arrangements can be confirmed.
Please contact our team with your order reference, photographs and the change or repair you need. Available options depend on the design, materials and condition of the piece. Ask us to confirm feasibility, any charges, timing and shipping arrangements before sending the item or authorizing work.
LET'S CREATE SOMETHING PERSONAL
Send us your idea. Tell us what matters to you, and we'll help define the next step.
Have drawings or reference images?
You can send them directly by email.