Stilbite & Heulandite on Matrix — Unst, Shetland Islands, Scotland

A sculptural cabinet piece featuring pearlescent stilbite fans and curved heulandite crystals rising from a textured zeolite matrix. The stilbite displays characteristic bow-tie aggregates with a silky, layered luster, while the heulandite shows the coffin-shaped terminations and soft green tint typical of fine Scottish material. Matrix surfaces are accented by golden-brown iron oxide inclusions that add depth and contrast.

Under shortwave UV (365 nm), this specimen exhibits a vivid blue-white fluorescence across both zeolite phases — with the heulandite showing a distinct cool-blue response and the stilbite a softer diffuse glow. Under 394 nm UV, the piece transitions to a warm violet-purple bloom, particularly intense across the heulandite zones.

Locality: Unst, Shetland Islands, Scotland
Minerals: Stilbite-Ca, Heulandite
Class: Zeolite Group
UV Response: Blue-white (365 nm) · Violet (394 nm)