The turquoise sure looks like the #8 mine to me, but several varieties of turquoise have similar attributes. This beautifully matrixed natural turquoise stone measures 1” by .75”, is set in flat bezel with coiled wire accents and peyote buttons. Very well crafted with attention to detail and quality. It’s a large ring, size 17+ (that’s as big as my ring sizer goes), weighs 13 grams and has a double shank of half round wire. No artisan hallmark but is stamped Sterling. Excellent condition.