There are many reasons people choose to collect antique glassware – and one is that it can be exceptionally valuable. Others collect it purely for its beauty or its connection to the past.

Types of Collectible Glass:
Based on Method - Blown Glass, Cut Glass, Pressed Glass
Based on Genre - Art Glass, Carnival Glass, Depression Glass, Elegant Glass
Based on Era - Historic Glass, Mid-Century Glass
Based on Formula - Borosilicate Glass, Cobalt Glass, Cranberry Glass, Lead Glass, Soda-Lime Glass, Uranium Glass, Custard Glass, Jadeite Glass, Vaseline Glass

There are some essential factors that you need to look at. In general, it's all about rarity, condition, and eye appeal. If something is made in a small quantity, the value will naturally be higher than if made in a massively large amount. As far as condition, the better the condition is, the higher the value is, as the item is more sought-after. Lastly, eye appeal, or simply beauty, is subjective and can vary from person to person, country to country, and fashion. What's desirable today may not be desirable in 20 years, and vice versa. Nonetheless, the very best way to get an accurate value for glassware is to seek expert guidance.