I live inland of San Diego County in the city of Escondido. Bought home 1995.

I buy loose gems. I buy in bulk.
I bought 10,000+ gems.

Bought Diamonds total weight of 4.5 carat rounds; 11 carat; 2 carat was actually 2+ carat emerald cut. Weights were actually more than 1 carat on the 1 carat sized emerald cuts. Had graduate of GIA inspect and his exact words were ‘If those are synthetic gems they are the best synthetics I have ever seen.’ Tested as 10 MOHS hardness scale, tester went fast to Diamond on each one, put under 2,500 x magnification and very nice results.
Buy a microscope worth investment.
Very bright white full of light. Compared with Moissonite (are still brighter than what I acquired)
Acquired
1/2 carat rounds qty of 10 color D, VVS1
1 carat emerald cut qty 11 color D, VVS1
2 carat emerald cut color D, VVS1