14k yellow gold Sava sphene stud earrings

These earrings are from an estate purchase and in excellent pre owned condition showing little to moderate signs of wear. The backs show wear but the earrings themselves really don’t. 

After months of research I’ve settled on these beautiful yellow green stones with rainbow like flashes to be sphene. More specifically Sava sphene. I even found the original website they were purchased from and sold out with a retail value of $4,999 with a description of AAA quality stones!
These magnificent rare stones are prong set in 14k yellow gold. Backs are also 14k. I’m unsure of the manufacturer. There’s an infinity hallmark that merely shows the manufacturer of the posts and backs . Total weight is .84 grams with backs. Stones measure about 6mm in setting. Yes, these are authentic gemstones, and yes, this is solid 14k gold. No papers.

Reasonable offers considered