Van Cleef & Arpels Zig Zag Ring

A lovely ring made by Van Cleef and Arpels probably around the 1940-50 period. It could be worn as a wedding bandA type of ring which is an equal width all the way round. They are traditionally used for wedding rings.
. It is fully signed and markedA small hallmark or punchmark either on the inside or outside of the shank which indicates the metal is platinum, gold or silver. If the metal is gold, it could also indicate the carat, e.g. 18 carat gold. with 18ct75% pure gold (or 750 parts pure gold and 250 parts other metals) gold poinconFrench for punch, stamp or French hallmark..