2. Jewelry Dress Cane-Ca. 1900-Plain rock crystal knob cut in an elongated and slightly tapering shape and embellished with a delicately filigreed silver ring set with four alternating blue and green tourmaline cabochons. The cylindrical collar itself is engine turned, enameled in two colors and framed with a plain ring on both ends. The enamel is embellished with under glaze micro-painted green leaf garlands with pink roses among precisely aligned, decorating fine gold elements. Ebony shaft and a brass ferrule. Best of its kind, this cane combines the visually striking and rich Russian look with the fine feel of a traditional and aristocratic Viennese jewelry. -H. 3” x 1”, O.L. 37 ½”--The industrial revolution brought new technological developments and facilitated engine turning and the production of enameled cane knobs and handles. Engine turning, also often called guilloché, is done with a rose-engine machine or decoration lathe, which cuts grooves in geometric patterns. It was used to adorn the cases of pocket watches and other small items and also to create printing plates for stock and bond certificates. Because the pattern is engraved, the reflection of light is enhanced, and its brilliance can be seen as the pieces are moved at different angles. Engine turning is very delicate and requires sophisticated equipment and high skill. This technique was developed in the 18th century and died out after World War One.