An Important Platinum, Tanzanite and Diamond Necklace, Van Cleef & Arpels, consisting of a three row link design containing one centrally set cushion cut tanzanite weighing approximately 31.67 carats above the asymmetrical three row articulated drop, the necklace containing 366 round and pear shape diamonds weighing approximately 27.35 carats total.Hand engraved: Van Cleef & Arpels OR PT950 SL497 (maker's mark).Accompanied by a AGTA Gemological Testing Center tanzanite identification certification number 92012406, dated February 27, 2003, stating Species: Natural Zoisite, Variety: Tanzanite, Weight: 31.67 carats, Enhancement: Heat.Accompanied by a copy of a Gemological Institute of America diamond grading certificate number 11847389, dated February 2, 2002, stating Weight: 0.31 carat, Color: D, Clarity: IF, Polish: Very Good, Symmetry: Good, Fluorescence: none, Laser Inscribed: GIA 11847389.Accompanied by a copy of a Gemological Institute of America diamond grading certificate number 11818718, dated January 4, 2002, stating Weight: 0.54 carat, Color: D, Clarity: IF, Polish: Very Good, Symmetry: Good, Fluorescence: none, Laser Inscribed: GIA 11818718.Accompanied by a copy of a Gemological Institute of America diamond grading certificate number 11847384, dated February 6, 2002, stating Weight: 0.71 carat, Color: D, Clarity: IF, Polish: Good, Symmetry: Good, Fluorescence: none, Laser Inscribed: GIA 11847384. 109.90 dwts.