TOURMALINE

Online lesson: Spring 2026 Program (SESSION 2) The tourmaline group and the main mineral species used as gemstones. Colour variability. Understanding mineral terminology versus trade or commercial names. Paraíba tourmaline: history, definition and occurrences. Main tourmaline treatments.

APRIL 9, 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.