Jools are created by Meytal Bar-noy who is an Israeli jewelry designer, who makes is very cool, one of kind hand-made jewelry. The jewelry is feminine, urban and fun, as in the sperm earrings and necklace I posted about a few days ago.
The materials used are gold, goldfill and silver (as well as gold and silver plating) and other materials like pearls, precious stones, leather, fabrics and coins.
See also another post about Jools designs
You can purchase Jools jewelry from her Etsy shop http://www.etsy.com/shop/meytalbarnoy
Here are a few of Jools pieces to look at: