Add a splash of color and a dash of brilliance with our array of magnificent diamonds, pearls and gemstones, each hand-selected and certified by the Gemological Institute of America (GIA). From exotic to exquisite, our selection of beautifully cut stones, in spectacular colors, perfectly compliment any piece, style and personality. When searching for something singular, Oncina will arrange for a private consultation with our in-house Gemologist, so you can discover exactly what you're looking for. Upon procuring your find, a follow-up appointment makes for a more intimate experience in viewing.