A Victorian diamond rivière necklace

A Victorian diamond rivière necklace, sixty five graduated old brilliant cut diamonds held within individual cut down collets, the centre old mine cut approximately 6.15 x 6.05 x 4.05mm, estimated approximate weight 1.02ct, assessed colour H/I, assessed clarity SI1/SI2, estimated approximate total diamond weight 14.00ct, assessed colour as ranged from H to J, assessed clarity as ranged from SI1 to I1, length 38cm, push-in diamond set clasp, hinged bale to the centre, unmarked, tested as 15ct gold and silver, weight 22.8g, together with a collection of loose old cut diamonds in varied sizes and weights, total weighed weight 4.15ct