At Callista Diamonds Co., we proudly offer GIA certified diamonds upon request and for many of our featured pieces.

The Gemological Institute of America (GIA) is recognized globally for its rigorous grading standards and expertise. When applicable, diamonds are evaluated by highly skilled graders in tightly controlled viewing and lighting environments to ensure accurate and consistent determination of each diamond’s characteristics. While not all diamonds in our catalog are GIA certified by default, we are committed to full transparency and can provide certification options based on your preferences and needs.

GIA SAMPLE REPORT

The results of the examination are compiled into a GIA Diamond Grading Report or Dossier, which includes detailed information on the diamond’s 4Cs (Color, Clarity, Cut, Carat Weight) and a plotted diagram of its clarity characteristics. At Callista Diamonds Co., our commitment to quality and transparency ensures that every diamond you purchase is of the highest standard. Experience the brilliance and integrity of Callista Diamonds Co., where exceptional diamonds meet unparalleled expertise.