Diamond brooch, first half of 19th Century

Of floral design, set with pear-, cushion-shaped, circular-cut and rose diamonds, the flower head set en tremblant, originally part of a larger jewel, later pin fitting.

Mounted in silver and gold. Estimated total diamond weight approximately 8.50-9.50 carats, mixed colours and clarities, stones bright and lively, foil backed, a few stones included. Flower head moves well, possibly later made to be en tremblant. Abrasions and tarnish to mount consistent with age and wear. In good condition.
"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 and to the Notice regarding import of Burmese jadeite and rubies into the US.
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."

During the 19th century there was a growing interest in the natural world through the study of nature, botany and the influence of romantic poetry including that of William Wordsworth.  Jewelled flowers and foliage were very popular due to their beauty and also their wearability.  Larger pieces such as tiaras, were able to be dismantled into several smaller parts including brooches. 

Earlier pieces were delicate, with more stylised designs and later compositions became more complex and with more realistic depictions of flowers, leaves and insects.  Designs might even encorporate flowers that were fashionable at the time or those that could convey romantic messages; ivy for fidelity and the forget-me-not for true love.  Towards the Mid 19th century jewels included movement by being set en tremblant, as with this example, jewels were set on a spring and would quiver when the wearer moved.