Distinctive hexagonal sixling aragonite form are fully pseudomorphed by quartz in this esthetic arrangement. A few small broken crystals serve to show the internal agate form that has replaced the Aragonite. A classic and complete true Pseudomorph, this material is no longer available, it has been found sporadically for several decades. This has the most sharp detail and best crystal arrangement that I have seen.
Glass clear and textbook sharp this is a small but super clean specimen from the alabaster quarries of Fuentes de Ebra. These are very fragile and so there are few that survive in such perfect condition. Since these are so distinctive they are found in many top collection but rarely are for sale in this quality. Unlike many this is not a twined crystal but a single prism that is optically clear.
Unusual habit Aquamarine ex. John Marshall Collection. The main crystal is 3.4 CM across the termination face, with an etched cavity in the center that bells out inside the crystal. The there is also a 2.2 CM Hydroxy-herderite crystal on the back side as a bonus. Good condition and a very nice "oddity" from this prolific region.
A very lustrous, glassy tourmaline that has zoning of dark-mid green to a nearly black green. It also sports a fibrous "cats eye" type structure best seen near the base. An older Schortmann's Minerals specimen (with label) that dates this back to the 1940's. Classic habit and form from Barra Do Salinas, few of these survived cutting as the cats eyes they show were quite desirable. Very minor chipping is noted with magnification but the overall quality is fine. The complex multiple terminations and deep striations give this a eyecatching quality.