Necklace in platinum 850 ‰ and yellow gold 750 ‰, formed by a platinum forçat link chain ending in a motif set with rose-cut diamonds framing a square pink sapphire, natural without any treatment, holding a piriform tassel adorned with a pear sapphire, natural without any treatment, in a surround of rose-cut diamonds. French work, early 20th century PB. 5.01 g - Total length 41 cm