Antique large impressive Regency style cut crystal Scottish style toasting goblet or chalice. The Thissle shaped bowl with cut lozenge , fluted top and facetted base, raised on knobbed circular foot. Pontil mark to base is a clear indication of this being hand blown.
This unusually large item may also be used as a vase of centrepiece.
Victorian , mid to late 19th century, more details on my own website