This is an absolutely beautiful exceptional natural Montana Sapphire & Diamond Platinum Ring. At the center of the ring is an extremely rare unheated natural 5.01 carat Montana Sapphire with G.I.A. certification. The stone is a natural Montana Sapphire with a very good to excellent oval modified brilliant cut crown with step cut pavilion having a high transparent clarity and rich scarce blue and green coloring. The ring has a solid Platinum construction with high polish finish having an oval dual stepped bezel with ribbon like accents on either side and diamonds down the band and the setting accented by a window lattice. Overall, the ring shows natural diamonds being both round brilliant and baguette cut with a total approximate weight of 0.80 to 0.95 carats, a high clarity of VS-2 to SI-1 and a color of F-H. The ring is from renowned designer Orianne Collins and is marked, "ORIANNE PT950". The piece has been authenticated by GIA (Gemological Institute of America G.I.A.) which confirms the above information with an official Sapphire Report. GIA is the highest form of gemology authentication on the market. The ring does not come with an appraisal but is nearly identical to the example sold by our company in our 11/16/2019 sale which was appraised at $34,785.00. The stone shows an immense large size of 5.01 carats with incredibly rare no indications of heating with gorgeous and rare blue and green coloring. Ring shows a size of 7 US.