Certified Lab-Grown & Mined Diamonds

Source certified lab-grown and mined diamonds in Oldham and Manchester from Alexander Jewellery. We offer GIA, HRD, and IGI certified diamonds with expert guidance and complete transparency.

Certified Lab-Grown & Mined Diamonds in Oldham and Manchester

At Alexander Jewellery, we specialise in sourcing certified lab-grown and natural mined diamonds, offering complete transparency, expert guidance, and exceptional quality. Every diamond we supply is independently certified by leading gemological laboratories including GIA, HRD, and IGI, so you can buy with total confidence.

Whether you are creating a bespoke piece of jewellery or selecting a diamond for an engagement ring, our sourcing service ensures you receive a diamond that meets the highest international standards.

Independently Certified Diamonds You Can Trust

Diamond certification is essential when purchasing a high-value stone. We only source diamonds that come with recognised, independent certification from:

  • GIA (Gemological Institute of America)
  • HRD Antwerp
  • IGI (International Gemological Institute)

These certificates verify the diamond’s cut, colour, clarity, carat weight, and overall quality. When you choose a certified diamond from Alexander Jewellery, you know exactly what you are buying — with no ambiguity and no hidden compromises.

Lab-Grown Diamonds

Lab-grown diamonds are chemically and visually identical to mined diamonds, created using advanced technology in controlled environments. They offer:

  • Excellent value for money
  • Consistent quality
  • A modern, ethical alternative

All lab-grown diamonds we supply are fully certified, ensuring the same standards of grading and transparency as natural diamonds.

Natural Mined Diamonds

For customers who prefer traditional mined diamonds, we source stones from trusted suppliers and ensure every diamond is independently certified. Each diamond is carefully selected for its brilliance, balance, and overall beauty.

Expert Diamond Sourcing & Personal Service

Our diamond sourcing service is tailored to you. Rather than limiting you to a small in-store selection, we work with trusted international suppliers to source diamonds that meet your exact requirements.

We guide you through:

  • Understanding diamond certification
  • Choosing the right cut, colour, clarity, and carat
  • Comparing lab-grown and mined options
  • Selecting a diamond that fits your design and budget
  • Every diamond is chosen with care and presented with clear documentation and expert advice.

Ideal for Engagement Rings & Bespoke Jewellery

Our certified diamond sourcing service is ideal for:

  • Engagement rings
  • Wedding jewellery
  • Bespoke commissions
  • Upgrading or replacing existing diamonds
  • Whether you are designing a ring from scratch or replacing a stone, we ensure your diamond is perfectly suited to you.

Start your diamond search today

If you are looking to source a certified lab-grown or mined diamond in Oldham or Manchester, we invite you to speak with our experienced team. We’ll help you compare options, explain certification clearly, and source a diamond you can feel confident in.


 

Send your enquiry