Earrings look nice, but unsure what you are asking kaetarroyo. Do you mean are they South Sea (Pinctada maxima) or are they natural pearls? Hard to be sure without seeing inside them (X-rays) for the latter, even though they appear to be more bead cultured externally, and they probably are Pinctada maxima in answer to the first question. Agree they look too light in tone for light grey so "silver" would be applicable if not white. Some additional images would no doubt be welcomed by others and certainly by me.