Description
OPALISED MARCASITE CRYSTAL
This Grade A Opalised Marcasite crystal specimen is identified with Miocene and associated with Mount Cidolog, Pasanggrahan, Sagaranten, Sukabumi Regency, West Java, Indonesia. Its opalised appearance, colour variation and translucent character make it an engaging mineral specimen for collectors, display cases, geological study and decorative presentation.
The specimen is presented as a natural mineralogical example rather than a manufactured ornament. Opalised marcasite refers to marcasite associated with opal-like silica material or an opalised appearance. Marcasite is an iron sulfide mineral and a recognised polymorph of pyrite, with the two minerals sharing the same chemical composition but differing in crystal structure. The opalised character can create visual variation and allow light to interact with the specimen in distinctive ways.
COLOUR, TRANSLUCENCE AND BACKLIT APPEARANCE
The product photography is designed to show how the specimen responds to transmitted light. Backlighting highlights colours and translucence that may be less apparent under ordinary room lighting, helping collectors assess the specimen’s visual character before purchase. Variations in brightness, colour intensity and transparency are natural features of mineral specimens and can also appear different depending on display lighting and screen settings.
The supplied product name identifies this piece as Grade A, Opalised Marcasite and notes that the backlit photograph highlights its colours and translucence. The photographs should be used alongside the written description when considering the specimen’s appearance and presentation.
LOCALITY AND GEOLOGICAL IDENTIFICATION
The recorded locality is Mount Cidolog, Pasanggrahan, Sagaranten, Sukabumi Regency, West Java, Indonesia. The additional identification supplied for the specimen is Miocene. Miocene is a recognised geological epoch within the Cenozoic Era, and this designation provides geological context for the specimen’s stated identification. No additional formation or host-rock details are specified here, so the specimen is best appreciated through its documented mineral name, locality and visible characteristics.
COLLECTING AND DISPLAY
This crystal is suited to mineral collections, geology-themed interiors, educational displays, cabinet specimens and thoughtful gifts for collectors. Its Indonesian locality adds geographical interest, while the opalised marcasite identification gives it relevance for those interested in sulfide minerals, silica-related alteration and unusual mineral appearances. The backlit presentation is especially useful for a display where transmitted light can be used to emphasise translucence and colour.
Sizing information is provided through the product images. Full sizing is shown in the photographs.
AUTHENTICITY
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.
Please review the photographs carefully for the specimen’s visible form, colour, translucence and overall presentation. Natural minerals may show individual variations in surface character and appearance, which are part of the appeal of collecting geological specimens.
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