I purchased the magnificent book Cartier in the 20th Century a collaborative effort between the Denver Art Museum, The Vendome Press in New York, and Thames & Hudson in London. It accompanied the major exhibit of Cartier in Denver in 2014.
The exhibition and book were made possible thanks to various Cartier CEOs and to the Heritage Department of Cartier, which houses the greatest collection of Cartier objects in the world. The Cartier Archives contains ledgers, photographs and drawings which have been drawn upon to produce this book.
To quote from the Archives - Maison Cartier website:
"PHOTOGRAPHS
An extraordinarily rich collection of photographs accompanies the ledgers: since 1906, as industry custom dictated, a life-size photograph has been taken of each piece produced in the workshops. The Paris collection includes nearly 40,000 negatives, including 30,000 gelatin bromide dry plates. This photographic collection is updated on a daily basis and provides an accurate visual record of production history." Fortunately, the firm did take pictures of significant pieces prior to that date.
It means that on page 31 the authors wrote "In 1904 Queen Alexandra purchased a spectacular necklace. Called a resille (hairnet)necklace. It consisted of a supple network diamonds with a large central stone and a removable fringe of cabochon rubies and emeralds (above and see page 226)." It was made in platinum and diamonds. According to the authors, Queen Alexandra wore it in the 1908 formal portrait bu Francois Flameng.
It means that there is a picture that is copyrighted which I cannot reproduce(sadly).
First, it is the necklace worn by Queen Alexandra (minus the drops) and Queen Mary in the images uploaded by Beth in this thread:
There is no leafy border where the diamonds meet the cabochon drops. Rather they flow straight down. As the photo is in black and white rubies and emeralds cannot be distinguished.