• Your Private Jewelry Factory in the U.S. and Europe
    Your brand. Your collection. Full-cycle jewelry production, wherever you are.

  • We Produce in the U.S. — at the Heart of Luxury in Miami

  • We Produce in Antwerp – The Diamond Capital of the World

At Four 9's Cluster, we operate as your private-label jewelry production partner — offering full-cycle manufacturing from CAD to casting, stone setting, polishing, plating, and final QA. With facilities in Miami (USA) and the EU, we guarantee global quality, local reliability, and competitive economics.

Full-Service Jewelry Production — From Design to Delivery

We produce jewelry of any complexity, from minimalist collections to highly detailed pieces. Our services include:
  • 3D CAD modeling and prototyping/li>
  • Mold making, wax injection
  • Gold, Platinum and Silver Casting
  • Laser cutting, engraving, welding
  • Rhodium & gold plating
  • Stone setting and finishing
  • Polishing, cleaning, final QA

Demand-Proven Collections & Efficient Manufacturing

In addition to producing your custom designs, we offer access to a curated collection of demand-proven models — bestselling designs across markets.
Our efficiency in manufacturing, diamond procurement, and logistics allows us to deliver these models at highly competitive prices — all while maintaining the consistent quality that Four 9’s Cluster is known for.

Transparent Metal Pricing & Ethical Sourcing

We provide full transparency in:
  • Metal origin and certification
  • Daily market-based pricing (gold, platinum, silver)
  • Precious metal sourcing from verified U.S./EU refineries

Diamonds — Yours or Ours

We offer:
  • Certified and melee diamonds from around the world — via our Antwerp office, a member of the Antwerp World Diamond Center
  • First-hand prices
  • Option to work with client-supplied stones
  • Compliance with Kimberly Process & GIA standards

Contractual Quality & Timely Delivery, Fully Insured Operation

Every order is governed by a production contract with clear terms:
  • Tolerances, dimensions, alloy specs
  • Delivery deadlines
  • Jeweler’s Block Insurance
  • Liability and accident coverage
  • Fire, theft, transport, and employee safety policies

Fast U.S. Distribution with Overnight Delivery

We offer overnight delivery across both the United States and European Union.
  • Our in-house fulfilment centre in Miami ensures fast, trackable domestic shipping
  • Three full-cycle production sites and three sales offices located near key logistics hubs
  • Overnight delivery available across the U.S. and EU major destinations
  • Optional dropshipping and private-label packaging for partners and retailers

U.S. & EU Standards, Premium Materials

We comply with all major jewelry manufacturing standards in the U.S. and Europe.
  • Our production relies on best-in-class equipment by Indutherm, Sisma, and others, as well as premium Italian alloys.
  • High safety standards across facilities, including:
  • Redundant electricity, water, air (ventilation and conditioning) and gas systems
  • Controlled access and physical security

IP & Data Protection

We ensure full confidentiality and IP protection:
  • NDA agreements available
  • U.S. and EU data and design protection compliance
  • Physical and digital access controls
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Extended Production Hours When You Need It Most

During peak seasons or urgent orders, we operate up to 6 days/week, including:
  • Dedicated rush teams
  • Expedited metal sourcing and casting windows