This style ring has been popular in my Etsy shop so I sourced more stones. These stones are Kingman turquoise and I can make this style ring with your choice of available stones and in your size.
Greener turquoise stones: https://www.etsy.com/listing/292124071/made-to-size-ring-green-turquoise
All of my turquoise rings: https://www.etsy.com/shop/MosaicSmith?search_query=turquoise+ring
All of my turquoise jewelry: https://www.etsy.com/shop/MosaicSmith?search_query=turquoise+jewelry