Highest Carat Diamond You Can Buy Guide

: A museum-quality loose stone listed for $2,380,000 at 1stdibs.com .

: An investment-grade "perfect diamond" listed for $1,600,000 at 1stdibs.com . Essential "Paper" for High-Carat Diamonds highest carat diamond you can buy

: Priced at $331,510 at Rare Carat .