Glass Candle Holders can be dated back to about 1700 and these types are very simple in form and blown from glass. Throughout the 1700’s they became more ornamental with 
fancy baluster stems, lips formed around the socket, and ornate ribbing or cutting of the glass.
With the forming of companies such as the Boston & Sandwich Glass Co. in the early part of the 1800’s, free-blown and pressed bases appeared. They utilized the same molds and patterns for the bases on a multitude of glass products. Shown in the picture to the left you can see a pair of candlesticks with matching bases to a blown oil lamp Circa 1830.