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At nearly twenty carats, this untreated pink and purple sapphire is less a conventional gemstone than a preserved record of crystal growth. Its hexagonal face reveals the fixed, spoke-like geometry associated with trapiche sapphire, set within layers of pink, mauve and purple. Unlike a star created by moving reflected light, a trapiche pattern is structural and remains fixed within the crystal as the stone turns.
Its scale makes the material particularly compelling. Trapiche patterns are known in sapphire, but the phenomenon is uncommon in corundum, and gemological literature has described true trapiche sapphires as very rare. Published examples are frequently far smaller—including documented trapiche or trapiche-type sapphires around 2.5–7.5 carats—making a 19.62 carat finished sapphire with a visible trapiche structure an exceptional collector-scale specimen.
The hexagon portrait cut was chosen to make the sapphire’s natural architecture the subject of the stone. Rather than covering the crystal with dense brilliance, the broad face acts almost like a window, preserving the radial growth pattern and allowing the relationship between the pink-purple color and internal structure to remain visible.
Its hexagonal outline also echoes the underlying crystallography of sapphire, creating a rare alignment between natural formation and finished design. At 17.49 × 13.43 mm, the result has extraordinary physical presence while retaining the features that make the crystal scientifically and aesthetically fascinating.
Trapiche gemstones are characterized by fixed radial growth patterns, most famously seen in emerald; GIA notes that the phenomenon has also been observed in sapphire and ruby and that trapiche gems as a group are relatively rare. Importantly, gemologists distinguish true trapiche growth from visually similar trapiche-type patterns, so definitive nomenclature should ideally be supported by a gemological laboratory report.
What makes this stone especially noteworthy is the combination: 19.62 carats, pink-purple sapphire, an expansive visible trapiche pattern, untreated material, and a finished portrait cut large enough to preserve that pattern. GIA has described trapiche gems as elusive and seldom encountered in high quality, while published trapiche sapphire examples illustrate just how unusual substantial finished specimens can be.