Faberge Style Vintage Russian Guilloché Enamel Egg Pendant 14k Gold & 960 Silver

Charming vintage Russian egg pendant with flower motif in nearly perfect condition. High quality guilloché enamel in the style popularized by Fabergé a century before this piece was made, with an intricately engraved repetitive pattern covered by glass enamel. The result is deeply lustrous, catching the light at every turn, an effect that was difficult to capture in photographs. The gem accents in the flower likewise catch the light, popping from the rich royal blue enamel. The pendant is stamped with Soviet Russian hallmarks, described below. The enamel has one small area of wear (indicated in an image), no chipping but just a bit of abrasion that reduces the luster in two small patches. Stones are untested (because they are so small it will be difficult to test), I'm selling as quartz but it is possible that they are diamond or something else. Hallmarks: "Л [hammer and sickle in a star] 583" the first letter is for the Leningrad/St. Petersburg assay office, the star mark for Soviet Russia, and 583 for 14k gold. "960" for Argentium silver (higher grade than 925 sterling silver). ":2 ЛЯ" :2 for the year 1992, and the letters for the maker's mark, which I have not yet been able to identify. Measurements: egg 5/8 x 7/16 inches, bail 5/16 x 3/16 inches. Weight: 5.65 grams. Chain not included.