Antique Whitby Jet brooch “nasturtium”

Simply stunning due to the depth of the Whitby Jet used on the facetted surround. The carved plaque probably represents there nasturtiums. As for the symbolism behind nasturtiums, the blossom is known for meaning “patriotism” and “conquest”. We’re not sure why exactly but the flower has strong ties to combat and war, perhaps because of its shocking color of orange and red or maybe because the shape of the foliage resembles the appearance of a shield. The original catch is in good working order. I measures 50x42mm and is 26mm in depth.