The spectacular gold silver topped and diamond necklace is designed with 12 circular elements each one studded with 12 diamonds of various sizes. Between each circular element is a star pendant. all in all there are 12 star pendants each studded with 9 diamonds. The largest diamond which is set in the center of the necklace is approximately 1.00 ct. Total approximate ct weight is 17.00 ct. Most of the 250 diamonds are vs/si clarity with g-i colors. stamped on the clasp wth 56 Czarist Russian gold hallmark and August Wilhelm Holmstrom initialslength: 42 cmweight: 55 grams August Wilhelm Holmstr�m (2 October 1829 � 1903) was a Finnish silver- and goldsmith. Born in Helsinki, Finland, he became an apprentice at the workshop of jeweller Karl Herold in St. Petersburg 1845�1850 master in 1857 with his own workshop.Senior member of Faberg�'s workshop, he was head jeweller and also produced parts for composite articles. He died in St. Petersburg.