Citrine

The birthstone for the month of November (my birthday month).

It is part of the quartz family and seldom found in untreated form. Treating the Citrine intensifies the colour to render it fit for jewellery. It took me some time to find the ring above; it's over 20 carats of a very light yellow, almost white, naturally formed, clear Citrine. The pendant above was a gift and I would think of better quality given it's more intense colour. How to certify if my gems are real?