Maybe the pear upside down at the top, and the round yellow one hanging down under it, in a halo?
Antique Large Rose Cut Diamond Necklace SALE PENDING at Ruby Lane
For Sale - Antique Necklaces from Romanov Russia Ltd on Ruby Lane - The necklace is crafted in silver and rose gold and set with 2 large and 23 small old rose cut diamonds. The main stone is a very large pear shaped 1.94 ct old rose cut diamond (9 x 9.2 mm). The upper diamond is a 0.40 ct old...www.rubylane.com
Pear on top and yellow one on bottom?
Ohhh... The pear might be just a bit too big (and not green), but it could be a whimsical orange pendant, with the pear as a leaf.