Art Nouveau Opal Diamond Enamel Pin/Pendant baguette cut fashioned in 12k yellow gold

fashioned in 12k yellow gold

fashioned in darkened sterling silver

flanked by Old European cut diamonds weighing app

20ctw in alternating square and marquise shapes

Art Nouveau Opal Diamond Enamel Pin/Pendant baguette cut fashioned in 12k yellow goldCentering an opal measuring approx. 10 x 7mm, flanked by Old European cut diamonds weighing app. 0. 06ctw. Measuring approx. 1 1 16 x 1 1 8 inches, fashioned in 14k yellow gold. Marked for Krementz. Circa 1900. Similar example on page 219 of Answers to Questions About Old Jewelry, by C. Jeanenne Bell. *Although vitreous enamel forms a hard, durable surface, it is susceptible to chipping and breakage upon impact.