GIA/CGL Certified Diamonds

Precious Stones with Certification

Our precious stones come with certificates from renowned laboratories:

  • CGL (Central Gem Laboratory) from Japan, one of the most authoritative labs for gem identification and grading.
  • GIA (Gemological Institute of America, Inc.) from the USA, the most recognized laboratory worldwide. JMW offers a variety of GIA diamond shapes for your selection.

Limited stock available at great prices!