This guide from www.decanter.com asks "What glasses do you need to make the most of your wine?" and provides a list of guidelines for consideration, including these: Glasses must have their curves in all the right places. The bowl must be round to help aerate the wine and let its aroma develop. It must also taper inwards towards the top, to stop its precious essence escaping. Crystal clear - Keep glasses plain, simple and colourless - you don't want to hide a prized claret, you want to enjoy it in every sense. A slight pattern or fluting can make Champagne more intriguing, but leave it at that. Easily lead - The brilliance of a wine is further highlighted by good quality lead crystal. You can tell the quality by the number of facets that are reflected and how thin the glass is.