Please find below the HD-quality by Tanja Sadow, JDMIS’ Dean and Gemmology instructor.

Once considered traditional or wholly feminine, pearls are now the height of fashion – the pearl has made its way into genderless and men’s jewellery, and is modernised by both high fashion and street trends embraced by everyone from celebrities to millennials. You will learn the secrets behind the lustrous organic gems and understand the nuances between natural, cultured, and imitation pearls. Perfect for gem buyers and jewellery entrepreneurs, this video offers essential pearl knowledge to enhance your gemmological expertise and enrich your collections with these stunning oceanic treasures.


  • 00:00 – Introduction to Pearls: Origins and Types
  • 01:17 – Natural vs. Cultured Pearls: Formation and Value
  • 07:47 – Akoya and South Sea Pearls: Sizing and Characteristics
  • 10:47 – Diversity and Cultivation of Freshwater Pearls
  • 15:22 – Gem and Jewelry Trade Secrets Course Overview
  • 18:18 – Unique Pearl Varieties and Imitation Pearls
  • 23:59 – Identifying and Testing Pearls

Ready for more? Obtain next-level confidence in with JDMIS’ flagship Certification programme, under an expert instructor with over 40 years of experience.

Gemmology online course materials provided

Video transcript:

Part 1: Pearl Origins and Differences

Part 2: Specialty Pearls and Imitations