Grandior Studio is a fine jewelry manufacturer for brands. We make ready designs from our collection or your own custom designs to order, from a single piece, in 925 sterling silver, gold vermeil and 10K, 14K or 18K gold, set with certified lab-grown diamonds. Every piece is checked against your approved sample, packed in your branding and dispatched within 7 days. Custom design work starts from $55 per design and every custom design stays exclusive to your brand.
- Minimum order
- One piece
- Metals
- 925 silver, vermeil, 10K, 14K, 18K gold
- Stones
- Certified lab-grown diamonds; natural and gemstones on request
- Quality
- Checked against your approved sample
- Custom design
- CAD from $55 per design
- Dispatch
- Within 7 days of an order
From first message to delivered
Choose or brief
Pick ready designs, or send a sketch, a photo or a description of your own.
Design and sample
Custom designs get CAD and renders. Every design gets a physical sample for your approval.
Approve the spec
Metal, stones, finish and packaging are fixed against the approved sample.
Made to order
Each piece is cast, set, polished and checked after your customer orders.
Packed and shipped
In your branded packaging, dispatched within 7 days.
If you can sell it, we can source it
Certified, fairly priced and set in your jewelry. We do not sell loose stones.
Lab-grown diamonds
Chemically, physically and optically the same as mined diamonds, at a fraction of the price. Our default, and always labelled lab-grown.
- Certification
- IGI, GIA
- Carat range
- 0.10 to 10.00 ct
- Cuts
- Round, oval, emerald, pear, cushion, princess and more
- Colour
- D to J
Natural diamonds
For brands whose customers want mined stones. Conflict-free, certified and available across all grades and cuts.
- Certification
- IGI, GIA, HRD
- Sourcing
- Conflict-free, traceable
- Range
- Full cut, colour and clarity range
Precious stones
Ruby, sapphire and emerald. Heat-treated or untreated as specified, with certificates where required.
- Stones
- Sapphire, ruby, emerald
- Origin
- Certified on request
- Treatment
- Specified per order
Semi-precious stones
Tanzanite, aquamarine, amethyst, topaz, morganite and more, for colour-led collections.
- Varieties
- 20+
- Weight and cut
- Specified per order
- Best for
- Colour and trend collections
We buy stones at source, where most of the world's diamonds are cut and polished. That means better stones at fairer prices, with certificates on every order. Moissanite is available on request and is always sold as moissanite.
- Certified stones on every order
- Line-by-line pricing
- Traceable sourcing on request
- 25+ years of sourcing relationships
Everything you need, handled
- Casting, setting, polishing and finishing in partner workshops
- Certified lab-grown diamonds, matched for pairs and sets
- Quality check against your approved sample on every order
- Your logo engraving and hallmarks where required
- Branded packaging, certificate and inserts
- An NDA before you share a design, if you want one
Production
Quoted per piece
Metal, making, stones, setting and finish, priced line by line for your design.
Custom CAD design
From $55 per design
Production-ready CAD and renders. Quoted once we see your brief.
Jewelry manufacturing: common questions
Is there a minimum order?
No. We make one piece at a time, after your customer has paid you, or a small run if you prefer.
Which metals do you manufacture in?
925 sterling silver, gold vermeil (silver with a thick gold layer), and solid 10K, 14K and 18K gold in yellow, white or rose. Platinum on request.
What stones do you use?
Certified lab-grown diamonds by default, always labelled lab-grown. Natural diamonds and precious and semi-precious gemstones are available on request.
How much does a custom jewelry design cost?
CAD design starts from $55 per design. The exact price depends on the design and is confirmed once we see your brief. Production is quoted line by line after the design is approved.
Do I own my custom design?
Yes. Once the design is paid for it belongs to your brand. We never make, sell or show it to anyone else.
Can you sign an NDA before I share my designs?
Yes. We sign a mutual NDA before you share anything.
How fast are orders dispatched?
Every order is dispatched within 7 days of confirmation. Delivery time after that depends on the destination country and prevailing conditions.
Often combined with
Tell us what you're building
30 minutes with Nick. You'll leave with clear numbers on cost, timelines and next steps.
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