How can you tell if a piece is Bohemian crystal?

To tell if a piece is Bohemian crystal, first look for markings. Although the labels used by Bohemian glassworks have evolved over the years, most pieces have markings that read "Bohemia" and some variation on the words "Made in Czechoslovakia" or "Czechoslovakia." Often, markings appear on paper and foil labels, which may not survive on older pieces. If you can't find a marking, examine your piece closely for visible seams, which indicate that the item is pressed, not blown, and therefore unlikely to be genuine Bohemian crystal. You can also try striking the side of the object with the handle of a butter knife. Genuine Bohemia crystal produces a sustained ringing sound when struck, while other types of glassware may not. Should you have difficulty identifying your piece, consult a certified appraiser or knowledgeable antique dealer who can help you determine if your crystal is Bohemian. On 1stDibs, shop an assortment of Bohemian crystal.