M. Gerard| emerald and diamond bracelet by Andre Vassort,…

• Assay / Assayed - Assaying is the testing of a metal, most commonly silver and gold to determine its ingredients and quality. In Britain, once an item of silver or gold has been assayed, a mark is stamped on it, certifying its purity. Known as hallmark, it derives its name from the Guild Hall of the Goldsmiths' Company, who recieved its Charter in 1327 giving it the power to assay and mark articles of gold and silver.
• Emeralds - Emeralds have been used in jewellery making for thousands of years, and are prized for their deep green colour, which is caused by the presence of chromium and vanadium in the mineral beryl. Because of their rare colour, emeralds are often more valuable than diamonds of a similar size and quality. In jewellery making, emeralds are typically cut into round or oval shapes to maximize their color and clarity. They are often set in gold or platinum and used as the centrepiece of a piece of jewellery, such as a ring or necklace. They can also be used in combination with other gems, such as diamonds, to create intricate and beautiful designs.
• Atelier - Atelier (French for "workshop"), in English usuage describes the workshop of an artist in the fine or decorative arts, where the artist and a number of assistants, students and apprentices worked together producing pieces that went out in the artists name. This was the standard practice for European artists from the Middle Ages to the 18th or 19th century

This item has been included into following indexes:

• Boucheron (France) - jewellery 34
• bracelets, with diamonds - diamond and emeralds 163
• Mauboussin (Paris) - jewellery 21
• Van Cleef & Arpels (France) - bracelets and bangles, designer 12