Pink sapphire and yellow diamond necklace

The slightly graduating row set with 34 oval-shaped pink sapphires weighing approximately 50.00 carats, alternating with 34 round diamonds of yellow color weighing approximately 10.75 carats, mounted in 18 karat pink and yellow gold, length 15½ inches, maker's mark for Carvin French.  

Accompanied by AGTA report no. 91008504 stating natural corundum, natural sapphire; no indications of enhancement by heat, based on the testing of two stones.