Faceted blue gemstone in jewel sleeve from fine jeweler believed to be sapphire

This faceted stone is bright and perfect and was sold by Lindenwold’s Fine Jewelers; acquired from the estate of a gemstone collector. No guarantee as to the stone because I haven’t had it tested. I believe it to be a natural sapphire. Selling at a low price because I have no skills to create jewelry. But it might be a great find for someone who does!