Hello Delma, I’m very glad that you chose Mearto for your online appraisal, Considering the photographs, overall pattern, stone quality and the metal used, I concluded that this is a Tiffany&Co Solitaire Ruby Pendant. Dating back to the period between 1930-1950. The Stone on the piece is a 1.64 Carat Natural Ruby from Madagaskar. Colour stability of the piece is excellent, the ruby was heated to enhance the clarity of the stone and it has minor to moderate residue due to the process. The ruby is oval cut. The metal body and the chain of the necklace is made of Platinium, one of the most used material by Tiffany&Co. The hallmarks and the symbols on the piece suggests that this is an original piece from Tiffany&Co's collection. It was a minimally decorated piece which matches the collection pieces from the estimated period. The piece is in good condition without any visible faults. Made of Natural Ruby. Dimensions: 8.08-6.31-3.77 Milimeters for the Ruby. Condition: The piece is in good condition without any visible faults. Provenance: Unknown. 6000-8000$. Please don’t hesitate to reach us again for more online appraisals on your precious items, thank you for choosing Mearto.