Any activity in the real estate sector such as buying, selling, exchanging, managing buildings in building zones and agricultural zones, administration, brokerage, renting, construction, promotion, renovation and valorization of real and intangible assets, financial investments and insurance brokerage as well as all activities directly or indirectly related thereto and any activity related to the purchase and sale of precious and semi-precious stones and the purchase and sale of precious and semi-precious metals (cf. statutes for complete purpose)