Vintage Lorenzo Colore SG Sterling Silver & Amethyst Ring in Original Box Size 7

This is a vintage ladies Colore SG ring from the Lorenzo collection still in the original box. Never worn so it's new without tags. It's sterling silver with an emerald style amethyst stone in a band style ring. The original jeweler says this is a natural stone. According to the jeweler, the company is no longer in business. The size measures a 7. The Certificate of Authenticity was never filled in, but the jeweler says it was purchased in 2012.