Three Gold Gem-Set Brooches and a Gold Locket

The first brooch designed as a spray of flowers, the petals applied in multi-colored enamel, further decorated with old-mine diamonds and cabochon rubies, mounted in gold and silver, with fitted case;  the second an openwork plaque decorated with flowers and scrolls, set with 33 old-mine diamonds and 3 variously-cut emeralds, mounted in gold;  the third featuring a shell cameo carved with the profile of a woman in classical taste wearing a fruiting grapevine in her hair, the openwork frame decorated at the corners with single-cut diamonds, mounted in gold; the gold locket-pendant, circa 1900, engraved on both sides with an elaborate pattern of flowers and scrolls, the front also engraved with a monogram in script, the inside featuring a painted portrait of Maureen O'Hara, signed Stella L. Marks, R.M.S. 

The first brooch has traces of solder and some oxidation. Is likely a composite from antique elements. Diamonds are decorative, total weight approximately 3.00 carats. Rubies are pinkish red, a few stones are abraded. The second brooch has solder repair and pin was probably later added. Diamonds weigh approximately 2.25 carats and are G-I color, VS-I clarity. Emeralds are watery green, a few abrasions/chips.Cameo brooch is in good condition, the diamonds weigh approximately 2.25 carats and are G-H color, VS-SI clarity. The locket is in good condition, some slight oxidation. Portrait is backed with a note: Miss Maureen O'Hara, portrait on ivory, painted December 1953 by Stella L. Marks, R.M.S., A.S.M.P., 27 Pembroke Gardens, London W8.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. 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. Illustrations in the catalogue may not be actual size. Prospective purchasers are reminded that, unless the catalogue description specifically states that a stone is natural, we have assumed that some form of treatment may have been used and that such treatment may not be permanent. Our presale estimates reflect this assumption.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.

Maureen O'Hara is wearing the emerald and diamond pendant-earrings (lot  233) in the locket portrait.