With a certificate from the Precious Stone Laboratory stating that the sapphire is of Sri Lankan origin, with no evidence of heat treatment. Certificate number 972504, dated 18th February 2003
For a similar example of a 'Pampilles' rings cf René Boivin, Françoise Cailles, pp 164, 194. The concept of the 'pampilles' design was based on a large single gem-stone set within a fringe of smaller freely moving drops. The design first went into production during the mid 1950s and remains as popular today. Such rings, including this example, were often special commissions.
The House of Boivin, like many of the most famous French Jewellery firms, was founded in the 19th century. René Boivin was born in Paris in 1864, and from an early age showed a great talent for design and engraving under his brother Victor's tutelage. During the 1890s René purchased several workshops and eventually he and his team of highly esteemed craftsmen moved to 38 rue de Turbigo. In 1893 René married Jeanne Poiret, sister of the celebrated couturier Paul Poiret, and together they expanded the business and created some of the boldest and most innovative jewels of the early 1900s. Jeanne Boivin was to take over the running of the company in 1917 after the unfortunate early death of her husband, becoming the first female jeweler of the 20th century. Madame Boivin relocated the business to the avenue de l'Opera and worked with her children Juliette and Germaine for the next forty years, joined from 1921 - 1932 by Suzanne Belperron. After Jeanne Boivin's death in 1959, the house was taken over by Louis Girard. In 1991 by the Asprey Group, and more recently it was purchased by Poiret.
A Sapphire and Yellow Diamond 'Pampilles' Ring, by Boivin,