Three emeralds on paper: - one emerald cut. Weight : 1.60 carats. Supposed provenance according to the attached certificate: Coscuez mine in Colombia. - one emerald cut. Possible treatment. Weight : 1.10 carats. Open cavity on the breech, through crack, outcropping frost. Supposed provenance according to the attached certificate: Coscuez mine in Colombia. - One square cut. Weight : 0.66 carat. Scratches, flush inclusions.