Karis Size 6 Striped Green Malachite Floral Metal Filigree Ring

I measured the ring to be size 6. Inside of ring is marked with the brand name "Karis" as well as the mark "STS". I confirmed the ring is not magnetic using a strong magnet. The ring has an oval cabochon gemstone in the center made of striped green Malachite. The cabochon has a hairline crack on its surface. The ring also has four larger stones which are probably either CZ (cubic zirconia) or clear rhinestones at the 4 corners of its outer diamond shaped silver tone metal frame and 4 smaller stones positioned midway between each. The ring also has an intricate metal Filigree around the cabochon. The Filigree takes the shape of vines of flowers.