How can I tell if a Fabergé egg necklace is real?

Fabergé egg pendant, limted edition, 18k yellow gold, translucent opalescent light blue, 2 brilliant cut diamonds 0.02 ct G VS Reference: F1793/...

Fabergé egg pendant necklace, limited edition, 18k yellow gold, translucent opalescent blue, 2 brilliant cut diamonds 0.02 ct G VS, 45 cm Referen...

Fabergé heart pendant, 18k yellow gold, pink translucent enamel with four so-called paillons, 1 brilliant cut diamond 0.015 ct G VS Reference: ...

Fabergé heart pendant necklace, 18k yellow gold, pink translucent enamel with four so-called paillons, 1 brilliant cut diamond 0.015 ct G VS, 45...

Fabergé 18k yellow gold guilloche enamel oval locket - Paraplui Collection - 10 diamonds total 0,12 ct G/IF, limited edition #14/300 with certificate of authenticity About the creator Victor Mayer Victor Mayer is internationally renowned for elegant timeless designs and unrivalled expertise in historic craftsmanship. Lovers of the extraordinary appreciate the beauty of Victor Mayer's designs, which use extremely rare techniques such as genuine enamel or elaborate engravings. Since 1890, the company has stood for the finest jewellery Hand Made in Germany. It is an open secret that the most renowned brands, such as Fabergé, entrust the company with the production of their most exquisite collections. Reference: F2696/Y7/00/00/102 Brand: Fabergé Collection: Paraplui Collection Picture frames: place for two pictures Material: 18k yellow gold Vitreous enamel: light and dark blue Diamonds: 10 brilliant cut, total 0,120 ct Limit number: 14/300 About vitreuos enamel: The inimitably luminous colours are literally created "in the fire": layer by layer, enamel is carefully fired in at 800 degrees Celsius. During guilloching, the finest wave patterns are engraved into the gold, creating a unique depth effect. Vitreous means made of glass: the ancient technique is almost forgotten today and Victor Mayer is perhaps the last manufactory to master it at the highest level. For two decades (1989 to 2009) the renowned German jewellery firm VICTOR MAYER was authorised to create exquisite Fabergé jewels...

Presenting a stunning pendant designed in the shape of a Russian Imperial gilt silver and guilloche enamel egg. The body of the egg is enameled in a deep, beautiful red guilloche ena...