Enamel guilloché sterling silver refers to ewelry or decorative items made from sterling silver, a durable alloy of 92.5% silver and 7.5% other metals, adorned with guilloché - a precise, intricate engraving technique creating repetitive patterns like waves or sunbursts- and topped with translucent enamel. The enamel, a glass-like coating, is fired onto the engraved surface, enhancing the pattern's shimmering effect as light plays through the translucent layers. This technique, popularized in the Victorian era and perfected by artisans like Fabergé, is labor-intensive, requiring skilled craftsmanship, which makes these pieces highly valued.