Grade A Opalised Marcasite Crystal Specimen Indonesia Miocene Mount Cidolog West Java, Indonesia | Backlit Photo Colours & Translucence

Description

Product Overview

This Grade A opalised marcasite crystal specimen is identified with the Miocene and associated with Mount Cidolog, Pasanggrahan, Sagaranten, Sukabumi Regency, West Java, Indonesia. It is a distinctive geological collectible for mineral enthusiasts, crystal collectors, natural history displays and decorative specimen presentation. The backlit photography is intended to highlight the specimen’s colours and translucence, allowing the visual character of the piece to be appreciated before purchase.

Mineral and Geological Context

Marcasite is an iron sulfide mineral belonging to the orthorhombic crystal system. It is scientifically related to pyrite, although marcasite and pyrite have different crystal structures. The term “opalised” indicates an association between marcasite and opalised, silica-rich material, creating a notably interesting combination for collectors who value unusual mineral appearances and geological textures. Opal is a hydrated form of silica that may display varying degrees of translucence, while marcasite is recognised in mineralogy as a metallic sulfide species.

The Miocene is a recognised geological epoch within the Cenozoic Era. This classification places the specimen within a defined geological time context, while the supplied locality identifies its stated Indonesian origin at Mount Cidolog in West Java. The locality is given as Mount Cidolog, Pasanggrahan, Sagaranten, Sukabumi Regency, West Java, Indonesia.

Appearance and Display

The product name specifically highlights colours and translucence under backlighting. These visual qualities make the specimen well suited to a mineral cabinet, geology collection, desk display, study area, educational setting or decorative arrangement. Backlighting can reveal visual effects that may be less apparent under ordinary illumination, making the accompanying photographs particularly useful for assessing the specimen’s presentation.

Full sizing is shown in the photographs. The photograph shows the actual specimen you will receive. This makes the listing suitable for collectors seeking a specific, individually photographed piece rather than a generic stock image. Please use the photographs to assess the specimen’s visible shape, proportions, colour presentation and translucence.

Authenticity

This Crystal is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.

Collecting and Gifting

Opalised marcasite offers an appealing subject for mineral collectors because it combines the recognised identity of marcasite with the distinctive visual interest associated with opalised material. Its Indonesian locality and Miocene identification add useful cataloguing information for a personal collection, classroom reference display or geology-themed gift. It can also complement collections focused on sulfide minerals, opal-related specimens, Indonesian geology or unusual translucent crystal materials.

The specimen may be displayed as a standalone geological feature or alongside other minerals to create a varied natural history presentation. The provided certificate wording and actual-specimen photography support straightforward collection records and gifting presentation.