This creation by Hunnisucklebeads is called
"Green Glory"

This hunnisucklebeads creation consists of groups of semi precious Malachite nuggets and Black Onyx rounds. These have been accentuated with black diamond Swarovski bicones and bali beads caps.
The necklace is completed with a sterling silver extension chain and a sterling silver lobster clasp to fasten.
The maximum overall length of this necklace from end to end is
approximately 19 inches ( 48cm ).

Here is a closer view of part of the necklace.

I also have a bracelet  and a pair of earrings that have been designed with the same style and beads to make a stunning set.