You are looking at a unique handmade sterling silver blue turquoise adjustable necklace. This necklace is completely hand soldered with a nice southwestern look.   This blue turquoise stone is rare blue spiderweb turquoise from Nevada.   As you can see the turquoise stone is set into a nice bezel setting.  

Necklace Size:  Adjustable from 17 5/8" inches to 18 1/8" inches in length
Center Turquoise Stone Size:  18mm x 25mm  
Necklace Weight:  28 grams
Artist: Brent DeSantis