Home / Imperial Red Diamonds Collection / 0.61 Ct. Round Brilliant SI1 Fancy Deep Purplish Red 0.61 Ct. Round Brilliant SI1 Fancy Deep Purplish Red $ 3,660.00 X ADVANCED DETAILS Stock Number: IR1832 DDG Report Number: Price per Carat: $6,000 Color Origin: Treated Color Diamond Origin: Mined Natural Full diamond DDG report available shortly.