Quartz on Malachite

Description

A broad, richly textured green specimen whose countless tiny crystal faces sparkle across rolling mounds and deep natural recesses.

This 181 g specimen presents a wide, undulating display face of green Malachite beneath fine crystals identified by the supplier as Quartz. The tightly packed crystal tips catch the light across raised formations, while darker hollows lend the piece an unusually deep, sculptural character.

A pale crystal rim frames the saturated green centre. The reverse reveals natural brown matrix with patches of green and pale mineral growth, shown clearly in the photographs. Measuring 90 × 60 × 37 mm, this is the exact specimen pictured and filmed.

Provenance: Supplied as from the Tenke-Fungurume area, Lualaba Province, Democratic Republic of the Congo. Mineral identification and locality are based on supplier information and have not been independently verified.

The open areas described in this piece contribute to its depth. Rather than a continuous flat surface, the growth can be followed around recesses and across changes in level. These spaces help distinguish the larger outline from the finer crystalline texture and give the specimen detail that can be appreciated as part of its three-dimensional form.

The recorded Malachite adds a second copper-mineral character to the specimen. Its green areas contrast with the other growth and help define boundaries, recesses and changes in texture. This relationship is an important part of the piece’s appeal: the minerals remain together on their natural setting, making it interesting for an association collection as well as for its principal mineral.

Quartz is silicon dioxide, a mineral whose familiar pointed crystals develop as material is added to growing faces. It occurs in many geological settings, including mineral veins and granite-related deposits. The variety of crystal lengths, orientations and degrees of transparency makes it an especially rewarding mineral to compare: pieces with the same composition can have very different natural architecture.

The glassy lustre of Quartz comes from light reflecting off its surfaces. Clear areas allow a view into the crystal, while internal fractures, veils and inclusions can scatter that light and create softer white regions. These features are distinct from the outer crystal faces. Studying both the interior and the outline adds another layer of interest beyond the familiar pointed shape.

The recorded origin is Tenke-Fungurume area, Lualaba Province, DR Congo. Within a collection of Quartz specimens, this locality gives the piece a geographical identity alongside its particular crystal habit and natural setting.

The specimen measures 90 × 60 × 37 mm, with a recorded weight of 181 g. The proportions give a useful guide to its place in a display, with the individual crystal arrangement and mineral association remaining the principal points of interest.

For display, support the stable base or the supplied mount rather than a projecting crystal. Quartz is relatively hard, but pointed ends and natural contact areas can still be damaged by an impact. Gentle handling helps preserve the arrangement that gives this individual specimen its character.