Description
SPECIMEN OVERVIEW
This Grade A Opalised Marcasite crystal specimen is identified with a Miocene designation and comes from Indonesia. It is presented as a collectible mineral specimen with a distinctive opalised marcasite identity, combining the visual interest of marcasite with colour variation and translucence that can be appreciated through careful lighting. The specimen is suitable for mineral collectors, geological displays, crystal cabinets, natural-history collections and decorative presentation.
The product name identifies this piece as Grade A Opalised Marcasite. Marcasite is an iron sulphide mineral recognised in mineralogy for its crystalline character and metallic appearance. In this specimen, the opalised description is part of the supplied identification and highlights the material’s distinctive visual presentation. Colour and translucence are especially important features of this piece, making it an engaging subject for close observation and photography.
GEOLOGICAL AGE AND LOCALITY
The specimen is associated with the Miocene, a recognised epoch within the Cenozoic Era. Its stated locality is Mount Cidolog, Pasanggrahan, Sagaranten, Sukabumi Regency, West Java, Indonesia. This locality information forms an important part of the specimen’s geological record and gives collectors useful context when cataloguing or displaying the piece.
Backlighting is highlighted for this specimen because illumination from behind can make translucent areas and changes in colour easier to observe. Viewing the piece under both ordinary room lighting and backlighting can provide different visual impressions, while close inspection may reveal details that are less apparent in a single photograph. The supplied images are intended to show the specimen’s appearance and provide the sizing reference.
COLLECTING AND DISPLAY
This specimen is a practical choice for a mineral collection focused on Indonesian localities, Miocene material, marcasite or visually distinctive translucent specimens. It can be displayed in a mineral cabinet, geological study area, office, home collection or educational setting. Its compact collectible format also makes it suitable as a thoughtful gift for a mineral enthusiast, geology student, rock collector or anyone interested in natural specimens.
For best presentation, place the specimen where its surface and translucent qualities can be viewed clearly without harsh glare. A neutral display setting can help the colours stand out, while backlighting may emphasise the optical character noted in the product name. Handle any natural mineral specimen carefully and keep it in a secure display position.
AUTHENTICITY AND PHOTOGRAPHY
This Crystal is a genuine specimen and Includes a Certificate of Authenticity lifetime guarantee generic card.
The photograph shows the actual specimen you will receive.
Full sizing is shown in the photographs.





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