Four gem set and diamond rings

One ring set with a cabochon turquoise within a frame of single-cut diamonds, size 52, one ring set with marquise-shaped diamonds and cabochon emeralds, applied with red, green and black enamel, one side highlighted with seed pearls, size 54^1/2, one ring set with circular- and single-cut diamonds, size 49^1/2, and one ring designed as a bull, applied with black enamel, the ears set with single-cut diamonds, the eyes embellished with circular-cut rubies, size 45^1/2.

Ring set with a cabochon turquoise: turquoise greenish blue, with good polish, minor scratches, growth marks and small matrix inclusions. Diamonds bright and lively. Scratches to the metal consistent with use. Gross weight approximately 16 grams. Ring set with marquise-shaped diamonds and cabochon emeralds: emeralds well matched in colour, green of medium strong saturation, with scratches, abrasions and nicks. Red, green and black enamel in good condition, with scratches and small areas of loss. Seed pearls well matched in colour, of slightly cream body colour, partly with rosé and green overtones. Diamonds bright and lively, one small diamond deficient. In good condition. Gross weight approximately 12 grams. Ring set with circular- and single-cut diamonds: Diamonds bright and lively. Signs of wear to the metal. In very good condition. Gross weight approximately 4 grams. Ring designed as a bull: Italian maker's mark, stamped 18 KT and 750 for 18 carat gold. Inscribed MADE ITALY and MODELE DEPOSE. Rubies red of medium strong saturation, with scratches, abrasions and nicks. Enamel in overall good condition. Diamonds bright and lively. Scratches to the metal. In good condition. Gross weight approximately 16 grams.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Please note that colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's. We do not guarantee, and are not responsible for any certificate from a gemological laboratory that may accompany the property. We do not guarantee that watches are in working order. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue, in particular to the Notice regarding the treatment and condition of gemstones.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."