Somewhat triangular shaped turquoise stone on 17 necklace. The stone is not blue nor is it green; I think of it as a bluish green. The stone measures 5/8th” wide by 1/2″ tall. Back is hallmarked by artist and. Chain is very interesting. Interior is darkened with exterior portion of link a matte finish which gives a somewhat two tone look. The stone is not perfectly smooth but does have some texture. Some artist prefer to work with nature vs against, and allow a stone to not be perfectly smooth. Signed on the back by the artist and. New and never worn. I try to cover most details in a description however should you have questions, please message.