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Tanzanite diamond & platinum necklace with 18ct white gold chain

This superb necklace has in its centre a heart shaped tanzanite cut by Alan from the rough material. The tanzanite is set in a mille-grained platinum setting into which round diamonds have been grain set to form a frame around the top of the tanzanite. On each side of the frame is a round platinum diamond set housing into which an 18ct white gold spiga chain has been fixed. Hallmarked by the London Assay Office for 2017, platinum and with the sponsor's mark "A&SP" for Alan & Sue Poultney.

Estimated weights colours & clarities:
The tanzanite:
Estimated weight: 3.47ct
Cut: heart mixed step cut
Estimated colour: transparent blue/purple
Estimated clarity: EC (eye clean)

The 17 diamonds:
Total estimated weight: 0.25ct
Cut: round brilliant cut
Estimated clarity: F - H
Estimated clarity: VVS - SI

Weight: 9.26gms - 0.3oz

Weights, colours & clarities of the stones are estimated as the stones have been examined and measured in their settings. Where the stones carry an independent certificate this will be indicated.