Green Onyx and Lapis Choker Necklace. Add a touch of timeless beauty to any look with this Green Onyx and Lapis Choker necklace. Handcrafted in our Miami studio, the mesmerizing combination of Emerald Onyx, Lapis Lazuli, and Golden Hematite adds a touch of exotic sophistication to your look. With a 15” plus 1” extender and 14 KT Gold filled clasp, this breathtaking Necklace is perfect for any occasion.