How to Verify the Purity of Gold and Diamonds

Presented by Plexus General Trading Limited

Verifying the purity of gold and diamonds is essential for both buyers and sellers to ensure authenticity, value, and investment confidence. At Plexus General Trading Limited, we emphasize transparency and quality assurance in every transaction. Whether you’re investing in jewelry, trading in raw materials, or sourcing for industrial use, understanding how to verify the purity of these precious commodities is vital.

🔍 Verifying Gold Purity

1. Check the Hallmark

The hallmark is an official mark stamped on gold items that indicates their purity. Common hallmarks include:

24K (99.9% pure) – Softest and purest form of gold.
22K (91.6% pure) – Common in jewelry.
18K (75% pure) – Durable and often used in fine jewelry.
14K or 10K – More alloyed, suitable for everyday wear.

Ensure the item is stamped with the karat number and the assay office’s symbol.

2. Use a Gold Testing Kit

Acid testing kits help verify purity by applying a drop of acid to the gold item. The reaction (or lack thereof) helps determine its karat level.

3. Electronic Gold Testers

These devices send electrical currents through the gold to analyze resistance, offering a non-destructive, accurate way to determine purity.

4. XRF (X-ray Fluorescence) Testing

This professional method provides a precise analysis of the elemental composition of gold. It is fast, non-invasive, and widely used by gold dealers and refineries.

5. Magnet Test

Gold is non-magnetic. If an item is attracted to a magnet, it may be gold-plated or counterfeit.

💎 Verifying Diamond Purity and Authenticity

1. Use a Diamond Tester

These handheld tools detect whether a diamond is natural or synthetic by measuring thermal or electrical conductivity.

2. Check for Certification

Authentic diamonds are often sold with certificates from respected gemological laboratories like:

GIA (Gemological Institute of America)
IGI (International Gemological Institute)
AGS (American Gem Society)

These certificates detail the 4Cs:

Carat
Cut
Color
Clarity

3. Loupe Inspection

Using a jeweler’s loupe (10x magnification), look for inclusions, polish lines, or laser inscriptions. Genuine diamonds usually have small imperfections; flawless diamonds are extremely rare and valuable.

4. Fog Test

Breathe on the stone. A real diamond disperses heat instantly and won’t fog up easily, unlike glass or cubic zirconia.

5. Water Test

Drop the loose stone in water. Real diamonds are dense and will sink, while fakes may float or sink slowly.

🏢 Why Choose Plexus General Trading Limited?

At Plexus General Trading Limited, we ensure:

✅ Gold and diamonds are tested and certified by trusted authorities
✅ Transparent documentation and certification
✅ Responsibly sourced, conflict-free products
✅ Expert guidance in verifying material authenticity

🌍 Our Global Offices for Trusted Service

🇹🇷 Turkey Office

📍 Yeni Mahalle, İsmet İnönü Blv. 33010 Akdeniz/Mersin, Türkiye
📞 Phone/WhatsApp: +90 535 409 77 30

🇬🇧 United Kingdom Office

📍 3rd Floor, 14 Castle Street, Liverpool, United Kingdom
📞 Phone/WhatsApp: +44 75 75 80 79 81

✅ Final Thoughts

Whether you’re a first-time buyer or a global trader, verifying the purity of gold and diamonds is non-negotiable. With trusted tools, certified labs, and professional advice, you can confidently invest in precious metals and gems. Plexus General Trading Limited stands by your side as a reliable partner, offering only authentic, high-purity materials that meet global standards.

Contact us today for genuine gold and diamond sourcing, verification support, and expert consultation.

Plexus General Trading Limited – Where Authenticity Meets Global Trust.