Art Nouveau small gold pendant with red stone

Gold, glass. Fineness Au 585 / 1000. Total weight 0,40 grams. Pendant in the shape of a drop, in Art Nouveau style. Set in the centre on a vertical gold wire with a cut glass red stone in an oval crown, bed. Fine engraved ornament. Slightly curved at the bottom.  Marked with Czechoslovak hallmark for foreign goods ( lyre, letter C ) . Central Europe from 1921. Height 2,3 cm.