Combined Crystals Combined Crystal (Cubes) – 1.40 ct. Combined Crystal (Cubes) – 1.40 ct. Octahedral Crystals Octahedral Crystal (Cleaved) – 2.60 ct. Octahedral Crystal (Cleaved) – 2.60 ct. Rough Diamond Parcels Rough Diamond Parcel (8 Crystals) – 3.70 ct. Rough Diamond Parcel (8 Crystals) – 3.70 ct.