Absolutely "Jar-dropping"

JAR
Tulip Brooch
2008
Rubies, diamonds, pink sapphires, garnets, silver, gold, and enamel
Private collection
Photograph by Jozsef Tari.

 "Joel Arthur Rosenthal, who works in Paris under the name JAR, has earned his reputation as one of the greatest jewelers of modern times.  A Harvard-educated New York native, Joel Arthur Rosenthal first tried his hand in several artistic enterprises, starting with writing French and English movie-scripts then jumping to designing tapestries, mastering the art of needlepoint and working briefly for Bulgari.  The series of job stints honed his skill for minute detail and jewelry making, until finally finding his calling as a jeweler."

http://www.jewelsdujour.com/2013/10/the-metropolitan-museum-of-art-presents-jewels-by-jar/