The stone originates from Labrador. These earrings are a darker shade than the pendant I'm selling so I would say that the stone is rated as Natural AA. The silver has a 925 stamped on it, which means it's 92.5% pure & is commonly known as sterling silver. The back is stamped by the designer's symbol, which I believe is Sparkes Design in Newfoundland. I bought it from a pop-up kiosk long ago. As you can see from the photos, the stone has a smooth polish, is a soft luminescent look with less veins and contrast between the blue & green shades. The dimensions are close to 1 ¾ inch long & almost a ½ wide. All you have to do is polish the silver now & then. Cash. Local Sale. I don't text so messages may be delayed. Please schedule an appointment. I'll send the address once confirmed. I also don't hand out my phone number.