Lisa,
No oil?I used it primarily on a large lot of Tridacna upon hearing Douglas' (Cortez Pearls) suggestion due to the seller's indication that the pearls were recently harvested and required some basic cleaning. Nothing to be gained with naturally lustrous and clean pearl.
Kima for sure! 9.2 carats, perfect 11.6mm x 8.5mm domed button, and flame so evenly and finely distributed that the chatoyance faithfully follows the light wherever it goes?
Perfect ring material, no diamonds necessary.