Quality Assurance

βœ… Quality Assurance – Plexus General Trading Limited

At Plexus General Trading Limited, quality is not just a commitment β€” it is the foundation of everything we do. Whether you are sourcing Gold, Diamond, Cobalt, Columbite, or Tantalite, we guarantee that all products meet the highest international standards for purity, grading, and performance.


πŸ” Rigorous Inspection & Testing

Every shipment undergoes strict quality control and third-party testing to ensure product authenticity and compliance with buyer specifications. Our QA procedures include:

  • βœ… Laboratory Analysis Reports

  • βœ… Chemical Composition Testing (ICP-OES, XRF, and Fire Assay for gold)

  • βœ… Purity Verification (e.g., Au 99.99% for gold)

  • βœ… Grading & Certification (for diamonds and gemstones)

We collaborate with recognized laboratories and inspection agencies like SGS, Bureau Veritas, and Intertek to provide independent validation of our products.


πŸ“„ Documentation We Provide

Each order is accompanied by full quality documentation, including:

  • πŸ“œ Certificate of Analysis (COA)

  • πŸ“„ Product Specification Sheet

  • πŸͺͺ Certificate of Origin

  • πŸ“¦ Packing List & Commercial Invoice

  • πŸ” Inspection Reports (when applicable)


πŸ’Ž Product-Specific Quality Standards

πŸ”Ή Gold:

  • Minimum Purity: 99.5% to 99.99%

  • Assay reports provided from certified refineries

πŸ”Ή Diamonds:

  • Graded using the 4Cs (Cut, Clarity, Color, Carat)

  • Accompanied by GIA or equivalent certificates (upon request)

πŸ”Ή Tantalite & Columbite:

  • Verified Taβ‚‚Oβ‚… and Nbβ‚‚Oβ‚… content

  • Delivered in ore or concentrate form, with consistent moisture and particle size

πŸ”Ή Cobalt:

  • High-grade cobalt concentrate with verified Co% content

  • Compliant with battery-grade specifications (if requested)


♻️ Ethical Sourcing Guarantee

We follow strict ethical and sustainable sourcing guidelines to ensure:

  • 🌱 No conflict minerals

  • πŸ‘· Fair labor practices

  • πŸ“œ Compliance with international trade and environmental regulations

  • 🀝 Long-term partnerships with verified mines and local suppliers


πŸ›‘οΈ Customer Satisfaction Commitment

  • πŸ’¬ Transparent communication before and after sale

  • πŸ“¦ Product samples and testing available prior to bulk order

  • πŸ”„ Refund/replacement policy on verified non-conforming goods

  • 🌍 Global logistics support for safe and timely delivery


πŸ“ž Contact Our Quality Control Team

πŸ‡ΉπŸ‡· Turkey Office

πŸ“ Yeni Mahalle, Δ°smet Δ°nΓΆnΓΌ Blv. 33010 Akdeniz/Mersin, TΓΌrkiye
πŸ“ž WhatsApp/Phone: +90 535 409 77 30

πŸ‡¬πŸ‡§ United Kingdom Office

πŸ“ 3rd Floor, 14 Castle Street, Liverpool, United Kingdom
πŸ“ž WhatsApp/Phone: +44 75 75 80 79 81

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