Design & Collection Development
For original designs and collections developed for repeat production.
High jewellery development & manufacturing
High jewellery development and manufacturing
Over half a century of experience in gemstones and jewellery in Bangkok, Jewelloni brings French craftsmanship to every project.Over half a century of jewellery expertise. French craftsmanship, made in Bangkok.
Services
Jewelloni works with jewellery brands, designers and private-label partners on design development, gemstone sourcing and high-jewellery manufacturing.
One‑of‑a‑Kind Development
For bespoke pieces and individual commissions.
OEM, ODM & Private Label Manufacturing
For production to your design or a design developed with Jewelloni.
Select a part on the ring or below. Drag to rotate.
Develop the first sketch.
The first sketch defines silhouette, proportion, stone layout and material relationships against the project brief.
Approve the design direction.
We confirm design ownership, materials, dimensions, quantity, target timing and confidentiality requirements before technical development.
Resolve the CAD and engineering.
The controlled CAD resolves the Center Gem, Basket & Prongs, Baguette Halo, Onyx Inlay and Pavé Shank & À jour as one precise construction.
Produce the castable wax.
The approved CAD becomes a castable resin or wax prototype for physical review before investment and casting.
Bring the design into precious metal.
Each component is precisely cast or handcrafted, then refined, fitted and pre-finished in preparation for setting and final assembly.
Set every stone with precision.
Carefully selected and matched gemstones are set under magnification, then checked for alignment, spacing and security.
Polish every surface by hand.
After setting and assembly, every accessible surface is refined and polished by hand for crisp edges, clean transitions and a consistent finish.
Inspect every detail before release.
Each completed piece is examined for stone security, alignment, dimensions, function and finish, then checked against the approved specification before delivery.
Coloured gemstone expertise
Sourced with expertise.
Matched with precision.
Draws on more than four decades of experience and trusted sourcing relationships across Myanmar, Africa and Australia. Each gemstone is carefully selected and matched for colour, cut, proportion and consistency throughout the finished jewel.
Diamond selection & calibration
Selected for brilliance.
Calibrated for precision.
Every diamond is meticulously selected and calibrated for cut, colour, clarity, proportion and exact dimensions, in accordance with each client’s specified quality and colour requirements. From pavé to precisely shaped stones, every layout is composed to achieve exceptional alignment, balance and visual continuity throughout the finished jewel.
Hardstone sourcing & custom cutting
From rough material
to a precise fit.
We source exceptional rough materials and custom-cut each inlay to the precise dimensions of the design. Colour, pattern and character are carefully considered before every component is shaped, fitted and hand-polished to create a refined, seamless junction with the surrounding metal.
18K yellow · white · rose gold · black gold
Gold engineered to
your specification.
We produce 18K gold in a range of colours, alloys and finishes, tailored to each client’s design, technical and quality requirements. Every alloy is selected with consideration for durability, setting, polishing and compatibility with gemstones and inlay materials.
Titanium craftsmanship & custom colour
Volume without the weight.
Colour without limits.
We work with titanium to create bold, sculptural forms with exceptional lightness and strength. Through precise anodising and controlled voltage techniques, we achieve a wide spectrum of custom colours, tonal effects and ombré transitions, tailored to each design.
Each component can be finished in satin or high polish before diamond and gemstone setting and final assembly.
SapphireRubyEmeraldTsavoriteTanzanite
Round brilliantBaguetteTapered baguetteTrapezoidPear shapePavé melee
OnyxLapis lazuliMalachiteTurquoiseMother-of-pearlTiger’s eyeCarnelianChrysopraseOpalRock crystal
18K yellow gold18K white gold18K rose goldAlloy matchingHigh polishSatin finishBlack gold
Anodised titaniumCustom colourOmbré gradientsVoltage gradientMasked transitionHeat colourSatin finishHigh polishStone-set titaniumDiamond & gemstone setting
Technique / Inlay
Calibrated inlay
for repeatable production.
Stone and metal geometry are developed together so each insert fits the approved design and finish.
Production scope
We source and match the material, define tolerances, cut and dry-fit each insert, then polish the stone and metal to a consistent junction before final inspection.
Preparation / Stone Selection
Selected with care.
Matched to the design.
Each stone is assessed for size, colour, cut and clarity, then matched to the approved design and its place in the finished jewel.
Production scope
We check dimensions and proportions, compare hue, tone and saturation, and inspect cut and clarity. Stones are paired and grouped for consistency before the selection is approved for setting.
Lapidary / Gems Recutting
Refined proportions.
Renewed brilliance.
Existing gemstones can be recut to refine proportions, improve light return or suit a new setting. Each plan balances the intended appearance, finished dimensions and retained weight.
Production scope
We assess the material, inclusions and existing facets before agreeing the recut. Girdle reshaping and size recalibration are planned around the design. Where suitable, chips are removed and facets repolished, followed by checks of symmetry, surface finish and final dimensions.
Setting / Diamonds & Gemstones
Precision setting
for every stone and design.
Our setters work across diamonds and coloured gemstones, from individual centre stones to complex pavé and multi-stone layouts.
Production scope
Each setting is prepared according to the selected stones and approved design. Stone fit, alignment, spacing and security are checked throughout production to achieve a clean, consistent finish across one-off pieces and repeat orders.
Construction / Articulation
Precision movement,
engineered into every connection.
Links, joints and moving components are developed to achieve controlled movement while maintaining alignment, durability and comfort.
Production scope
We develop and test each connection and repeated component before production, checking movement, drape, clasp alignment and fit to ensure consistent performance across the finished piece.
Technique / Enamel
Controlled colour
from sample to production.
Colour, depth and surface level are approved against a physical sample before the production route is confirmed.
Production scope
We prepare the cells, apply and fire controlled layers, level the enamel and inspect colour consistency against the approved reference before setting and final finishing.
Lookbook
Rings
Vivid pink oval sapphire in palladium white gold, accented with custom-cut baguettes, onyx inlays, and delicate micro-pavé.
Earrings
Violet-pink titanium drop earrings featuring an ombré progression from pink sapphires to rubies.
Bracelets
Flexible, fabric-like bracelet featuring emerald-cut blue and pink sapphires, green tsavorites and white diamonds.
Necklaces
Rubellite centerpiece on a flexible rose gold necklace, accented with tapered baguettes, carré-cut stones and micro-set, custom pyramid-cut pink sapphires.
Inside the Jewelloni Workshop
From the first design idea to the final quality check, each piece moves through a skilled team of specialists. Our departments work closely together to develop and produce fine jewellery with precision, care and attention to detail.
Design & Development
Award-winning artist-jeweller Sébastien Goerig combines creative vision, technical expertise and CAD to turn ambitious concepts into production-ready jewellery.
CAD/CAM Engineering
Using Matrix, Rhino and advanced 3D printing, our engineers create precise models, with wax prototypes for client review before production.
Gemstone Selection
Drawing on decades of expertise, Bangkok suppliers and our own inventory, we select and match gemstones for each design.
Stone Cutting & Preparation
Our specialists custom-cut gemstones and hand-shape inlays for a precise fit, preserving each material’s character and achieving a clean finish.
Goldsmithing
Working in 18K gold and titanium, our goldsmiths shape and assemble each piece with precision, strength and balance.
Setting
Our setters secure each gemstone with precise alignment and spacing, carefully finishing every prong for a smooth feel and secure hold.
Polishing
Throughout production, our polishers refine surfaces and contours for a consistent finish, preserving every fine detail and design line.
Quality Control
We check construction, gemstone security, alignment and finish throughout production, ensuring each piece meets its approved design before delivery.
Founder & Client Relations
Our founder and team work directly with clients, sharing progress and coordinating workshop decisions from the first brief through final quality control.
A family workshop, built over generations.
Shali Zevuloni founded Jewelloni in 1983 while working in Bangkok’s coloured-gemstone trade. That background established the company’s focus on gemstone selection, colour and finished jewellery.
Shali and his wife, Ronit, brought together his gemstone expertise and Bangkok’s jewellery-making tradition. They built trusted relationships around gemstone selection, colour and the creation of complete fine-jewellery pieces.
Seeing an opportunity to unite Eastern and Western design sensibilities, Shali began nurturing local craftsmanship and transforming precious gemstones into distinctive fine jewellery.
Nearly three decades later, Shali’s sons, Nir and Gil, joined Jewelloni, carrying the family’s work forward through creative design and precision manufacturing, with a commitment to the highest standards of quality.
Based in Bangkok
since 1983.
Jewelry Trade Center,
Silom Road.
Jewelloni operates from the Jewelry Trade Center in the city where the business began. Its foundation in coloured gemstones and Bangkok jewellery workmanship continues to support design, sourcing and manufacturing today.