Netopen Raw Diamond Rough Crystal Specimen 2.2ct — Natural White Stepped Cube

The Netopen Natural White Raw Diamond Rough Crystal Specimen at 2.2 carats in cubic habit represents one of the less frequently encountered crystal forms in the natural rough diamond category — the cube, or hexahedron, whose six flat square faces develop under specific mantle growth conditions that differ from the octahedral environment that produces the most commonly recovered rough diamond crystal form. Cubic diamonds are associated with a specific growth mechanism — cuboid or stepped growth — that produces flat square faces perpendicular to the cubic crystallographic directions rather than the diagonal face orientation of the octahedral habit, and which typically results in crystals with a visually distinct stepped or laddered surface texture on the cube faces as successive growth layers build up in a stacking pattern. The stepped cube habit is immediately visually distinctive even to non-specialist observers — the geometric contrast between the flat, stepped square faces and the sharp angular outline of the cubic form creates a specimen appearance quite unlike either the octahedron or the dodecahedron and one that many collectors find among the most visually interesting of all natural rough diamond crystal habits precisely because of its geometric precision and the clarity with which the stepped faces communicate the layer-by-layer growth history of the crystal. Cubic diamonds from well-documented geological sources are statistically less common in commercial rough supplies than octahedral material, and cubic habit specimens of the quality represented in this 2.2ct example — clear cubic form, well-developed stepped faces, good color, and documented provenance — are correspondingly sought by collectors with specific interest in crystal habit variety. Near-colorless to faint color range. Stepped cube face features clearly visible under illumination from oblique angles. Dimensions approximately 6.8mm x 6.5mm x 6.3mm. Geological documentation of cubic growth mechanism, conflict-free provenance, gemological certificate, and reference material on cubic diamond habit significance supplied.