GEMSTONES IN THE PORTUGUESE CROWN JEWELS

Online lesson: Winter 2026 Program (SESSION 4) The gemmological study of the Portuguese Crown Jewels that made in preparation for the opening of the Royal Treasure Museum confirmed the intimate relationship between the Portuguese royal house with Brazilian diamonds that comprise over 90% of the gem materials in the collection in different cutting styles of the period (18th-19th centuries). Emeralds, rubies, sapphires, spinels, quartz as well as biogenic gem materials, were also identified among other gemstones in a total of over 22,000 fully documented items.

JANUARY 12, 9:00 AM or 7:00 PM (Lisbon/London timezone)

Legal information:

ALL end consumers:  VAT at a 23% is added, regardless of the client’s fiscal jurisdiction.

B2B - Please contact us before you register for assistance with business accounts for tax and invoicing purposes (see above) or for large group bookings.

Businesses in the European Union (EU)*: VAT is not added for businesses with a verified VAT number (VIES). EU member states’ reverse charge rules apply).

Businesses established in Portugal: IVA at a 23% is added. NIF or NIPC is recommended for invoicing.

Video/audio recordings: Due to local privacy law, recording of the session is strictly NOT permitted.