9ct gold, silver emerald and diamond locket. The hinged locket modelled as a heart, centring a fancy diamond shaped emerald measuring approximately 9.87 mm by 9.02 mm, within a surround of graduating old European-cut diamonds to a diamond set cross bale, the diamonds together weighing approximately 4.00 carats, glazed panel to reverse, suspended from a later fancy link chain in 15ct gold and platinum,. Pendant length 32 mm, width 23 mm, chain length 440 mm. Provenance: lady Louisa Lascelles (nee Thynne), 3rd Countess of Harewood, thence by descent to the current owner.. Harewood house in West Yorkshire has been the seat of the Lascelles family since the late 18th century. Designed by architects John Carr and Robert Adam for the 1st Baron Harewood Edwin Lascelles, Harewood house was created in the Palladian style, with classical features and an emphasis on stately symmetry. Construction of the house took place between 1759 and 1771.. Henry Lascelles was the 3rd Earl of Harewood, born in 1797. A British peer and member of parliament, he married lady Louisa Thynne, the daughter of Thomas Thynne, 2nd Marquess of bath, on the 5th of July 1823. No major renovations took place at Harewood house until Henry Lascelles increased the accommodation in the 1840's, in part due to the fact that he and his wife had fourteen children together.. An 1855 portrait of Louisa Lascelles by English painter George Richmond currently hangs in the dining room of Harewood house. It portrays the formidable matriarch in a black gown, accented with a red paisley scarf shawl. In the scene, she gestures towards the impressive Italian style terrace that she commissioned Sir Charles Barry to design as part of the 1840's renovations. On her wrist is a bracelet which suspends the heart shaped emerald and diamond locket that was passed down through the family.