Detailed Description A great iron-cross twin with prominent striations emphasizing the “crosses”, all around the piece. Sharp with good lustre. In excellent condition, a couple of rubs. This piece hosts two small additional crystals – one is a simple dodecahedron and the smaller of the two is in fact itself an iron-cross twin (needs a […]

Detailed Description This sharp iron-cross twin has the top lustre I’ve seen from Gachalá. It has good relief highlighting the dodcahedral forms and also features striations emphasizing the “crosses”. In excellent condition, one of the best in the lot – this is an exquisite piece! NB about the photographs: All of the specimens from this […]

Detailed Description A superb iron-cross twin, this one has it all: great striations emphasizing the crosses (particularly the main one, forward in the first photo), and great relief emphasizing the individual dodecahedral forms in the twin. Sharp, with good lustre and in excellent condition (a couple minor rubs and a chip underneath). This is an […]

Detailed Description A very compact iron-cross twin from Gachalá. The crosses are highly emphasized by striations and this piece really pops when angled right under the lights. In excellent condition. The low relief makes the overall general form of this twin almost cubic – it is fantastic! NB about the photographs: All of the specimens […]

Detailed Description An exquisite iron-cross twin, with striations emphasizing the crosses. Beautifully proportioned and centred, sharp with good lustre, in excellent condition. A small simple (untwinned) dodecahedral crystal is attached on one side (the underside in the first photo). Textbook – this is first rate twin from Gachalá! NB about the photographs: All of the […]

Detailed Description A spectacular twin – two pentagonal dodecahedra at 90 degrees with only subtle striations and few surface complexities, allowing the overall form to just jump out. Sharp, with good lustre – has a very crisp look. In excellent condition – this is a super iron-cross twin! NB about the photographs: All of the […]

Detailed Description This sharp, lustrous twin features exhibits crosses punctuated by brilliant striations. The crystals are almost centred on one another, giving very balanced overall form. In excellent condition. A gorgeous iron-cross twin! NB about the photographs: All of the specimens from this find are black-to-dark brown in colour. The lustre varies somewhat. In order […]

Detailed Description A gorgeous iron-cross twin – so close in form to an idealized model! One of my favourites of the lot, the crosses are sharp and striated, and the development is very even so that the crystal penetration is almost equal all around. In excellent condition, a few tiny hollows in the goethite veneer. […]

Detailed Description This twin is sharp, lustrous and clearly shows the forms of the interpenetrating dodecahedral crystals. The cross features are highlighted by striations. In excellent condition – a very bright piece that jumps out under the lights. NB about the photographs: All of the specimens from this find are black-to-dark brown in colour. The […]

Detailed Description A sharp, lustrous iron-cross twin showing even development and great crossing. Very three-dimensional with good relief. A small untwinned sidecar crystal is also present – this is uncommon from Gachalá. In excellent condition, one uneven corner at the back and bottom corner as displayed. A super pyrite iron-cross twin. NB about the photographs: […]

Detailed Description A textbook iron-cross twin with a brilliant cross that displays forward (sits perfectly as in the first photo). Sharp and lustrous, with striations that emphasizing the “crosses”. In excellent condition, a couple tiny hollows in the goethite veneer, on the underside of the piece. A great specimen from Gachalá! NB about the photographs: […]

Detailed Description A sharp, highly-lustrous iron-cross twin with prominent crosses, emphasized by fine striations. Clearly-defined pentagonal dodecahedra, offset just enough to make the forms jump out. In very good condition, a few small hollows in the goethite veneer. A striking, three-dimensional display specimen. NB about the photographs: All of the specimens from this find are […]