Aquamarine (Beryl) - Gem Elongated Prism with Schorl Inclusions, Pakistan

Aquamarine from the granitic pegmatites of northern Pakistan remains the benchmark against which gem blue Beryl from other localities is measured, and this single, doubly attractive prism shows precisely why. It is a slender, wholly gemmy crystal of exceptional internal clarity, carrying a population of jet black Schorl needles suspended within the blue like ink strokes in water. The habit is classic for the material: a long hexagonal prism with sharply drawn, deeply striated prism faces running the full length of the crystal, closed by a flat, glass-clear basal pinacoid. The termination is the piece's great asset. Viewed down the c-axis, as in the second photograph, the hexagonal outline is complete and the basal face reads as a polished window, entirely transparent, giving an uninterrupted view straight into the body of the crystal. Vertical striations catch the light along the prism and organise the eye down the length of the piece. Colour is handled with real subtlety here. In ordinary reflected light the crystal grades from near-colourless and water-clear at the upper end through a soft glacial tint into a distinctly saturated sky-to-teal blue toward the base. The gradient is a genuine growth zoning rather than a surface effect, and looking down the long axis concentrates the colour so that the same crystal that appears almost colourless from the side reads as a strong swimming-pool blue end-on. That doubling of character, pale in profile and richly blue down the axis, is a quality collectors pay close attention to. Lustre is bright and vitreous, approaching glassy on the basal face, and the prism faces flash cleanly in sequence as the crystal is rotated under a directional light. Internally the Schorl inclusions are the signature: short black needles and stubbier prisms, some sharply terminated, frozen at varying depths and angles. Under a loupe they cast faint shadows through the blue, adding scale and depth to what would otherwise be simply a clean gem crystal. A few whitish growth veils and healed planes near the lower portion read as internal texture rather than distraction. At 8.2 x 1.9 x 1.8 cm and 53.9 grams, this is a small cabinet crystal in the classical single-crystal format, complete and well proportioned rather than a cut segment or a section of a larger prism. Its slenderness gives it more presence than the dimensions suggest, since the whole length transmits light. Broad, flat basal faces and the projecting prism edges of gem Beryl are the first things to suffer in recovery and handling, and their condition governs desirability more than any other factor in this material. Here, they display well in the photographs. Set upright under a single directional light, the crystal lights from within and the Schorl needles seem to hang in mid-air.