OSKA — Istanbul Gold Jewelry Design, Wholesale and Custom Manufacturing

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Panther model
OSKA SIGNATURE

THE PANTHER COLLECTION

OSKA's signature collection. A panther bracelet made in our own atelier, in gold, silver and black finishes with white, champagne and leopard stone options.

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OUR OWN DESIGN · PRODUCTION-READY

ALVEO & MELIS

Two signature collections born from the hexagonal honeycomb. Moulds ready, fast sampling.

CERTIFIED · IGI / GIA

THE LAB-GROWN DIAMOND COLLECTION

The same structure and brilliance as mined diamonds. Tennis, bangles, rings and earrings in 9K–18K gold and 925 silver, made for your brand.

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OXIDIZED SILVER · GOLD RELIEF

SIGIL

From signet rings to leather bracelets and medallion necklaces: hand-engraved textures on oxidized 925 silver, gold dragon, eagle and wave reliefs, coloured stones. Every piece is made in our atelier for your brand.

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AT YOUR SERVICE

Sample — Credited on Order
Hallmarked Karat
IGI / GIA Certified Diamonds
Insured Worldwide Shipping
Your Design Stays Yours
FAQ

OSKA manufactures 9K, 10K, 14K and 18K gold jewelry, natural diamond and lab-grown diamond jewelry in Istanbul for brands and jewelers. Design, CAD, casting, stone setting and plating are carried out to order; designs are produced under your own brand or as your own custom design. See how we work.

OUR ORIGINS

Gold & Silver

Every gram we work was born long before Earth, inside stars and in their collisions. This is their journey.

Raw native gold in quartz

GOLD

Raw form: native gold in quartz

  1. BIRTH Gold cannot form in the ordinary fusion of stars. In the collision of two neutron stars (a kilonova) and in some giant supernovae, atomic nuclei capture neutrons within seconds and become gold. A single collision observed in 2017 is estimated to have produced several Earth masses of gold.
  2. JOURNEY This stellar debris scattered through space and mixed into clouds of gas and dust. About 4.6 billion years ago, the Solar System was born from one such cloud, already enriched with gold.
  3. ARRIVAL ON EARTH While the young Earth was still molten, most of its gold sank into the core. The gold we mine today is thought to have arrived with the asteroid bombardment some 4 billion years ago.
Raw native wire silver

SILVER

Raw form: wire silver from a vein

  1. BIRTH Silver forms in the supernova explosions of stars about 8–9 times the mass of the Sun through the “weak r-process”; part of it is also made in aging red giants by slow neutron capture (the s-process).
  2. JOURNEY Because these stars are more common than gold-forging collisions, silver is far more abundant than gold. It joined the same cloud that became the raw material of the Solar System.
  3. ARRIVAL ON EARTH It became part of Earth's crust, concentrating in hot-water veins where it sometimes crystallises as fine wires like this. Its average share of the crust is tiny (0.08 parts per million), yet far greater than gold's.

In our atelier we work these two metals as 925 silver and 9K–18K gold.

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Photos: Science History Institute, CC BY 4.0

THE STORIES BEHIND THE STONES

GEMSTONE GUIDE

Discover how gemstones formed, were discovered, and travelled through history into modern jewelry.

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OSKA Panther bracelet pencil design study
SINCE 1461 · THE GRAND BAZAAR

Today's atelier of a five-century craft.

Since the 15th century the Grand Bazaar has been one of the world's great jewellery centres. Knowledge passed from master to apprentice still guides every step today: casting, filing, stone setting and polishing.

Every OSKA piece begins on paper: first a pencil sketch, then measurements and detail studies. Our Panther bracelet was born this way, with its honeycomb body, hand-set panther heads and box clasp.

OSKA comes from within this tradition. In our atelier, traditional handcraft meets today's CAD technology and becomes repeatable quality for brands.

GRAND BAZAAR · OUR OWN ATELIER

Every piece is made in our Grand Bazaar atelier.

From design to casting, setting to polishing, every step is done in our own atelier by our own craftsmen. No middlemen: one team takes you from sample to production.

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HOW WE WORK

From idea to display, in four steps

  1. 01Brief

    Choose a design from our site or send a sketch, photo or idea.

  2. 02CAD

    The piece is modelled in 3D; metal, karat, stones and finish are agreed together.

  3. 03Sample

    A sample is made in our atelier. The sample fee is credited on order.

  4. 04Production & Delivery

    Karat hallmark on every piece, IGI/GIA certificates on request, insured shipping.

REQUEST QUOTE / SAMPLE MESSAGE ON WHATSAPP
FREQUENTLY ASKED QUESTIONS

About wholesale and custom manufacturing

What is the minimum order quantity?

It depends on the model and the craftsmanship. Tell us which design you want on WhatsApp or through the quote form and we will give you the quantity for that model.

Can I order a sample?

Yes. Samples are paid, and the sample fee is credited against your order if it goes ahead.

How does payment work?

Production starts with a deposit and the balance is paid on delivery.

Do you produce under my own brand or my own design?

Yes. We do private label, OEM and custom design production. A design made for one client is never produced for anyone else, and we sign a confidentiality agreement on request.

Are diamonds and lab-grown diamonds certified, and is there a hallmark?

Diamonds and lab-grown diamonds are delivered with certificates such as GIA or IGI. Every piece carries a karat hallmark. We work in 9K–18K gold and 925 silver.

Do you ship internationally?

Yes, we ship worldwide with insurance.

Can I order a single piece or retail?

Yes. Write to us on WhatsApp or tell us which model you like on the site and we will make it as a custom order. Wholesale and retail pricing differ.

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GRAND BAZAAR · A MEMORY OF CRAFT

From the Grand Bazaar
to contemporary jewelry making.

In the narrow streets of the Grand Bazaar, the sound of metal, the hand of the artisan and the light of stone belong to the same story. OSKA brings this craft memory together with Istanbul's contemporary design language, reinterpreting generations of mastery for today's brands.

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WHOLESALE · CUSTOM · PRIVATE LABEL

Let's develop your collection together.

Choose a design or send us your idea, sketch or photo. From sample to production in gold, diamond and silver jewelry, we do it all in our Grand Bazaar atelier.

REQUEST A QUOTE MESSAGE ON WHATSAPP