Rare Fulgurite- Saturated Blue/Teal color
A striking and rare specimen of Fulgurite, naturally formed by a high-energy lightning strike on silica-rich material. This particular specimen is distinguished by its vibrant, saturated blue-green (teal) coloration and glassy, vitreous texture. Technical Specifications: Weight: 89.15 carats (as measured on a digital scale). Dimensions: Approximately 45 mm×28 mm (based on ruler measurements). Composition: Primarily Silicon (87.0%), with notable trace elements including Cobalt (8.90%), which likely contributes to the intense blue coloration. Other trace metals include Zinc, Iron, and Copper. Method of Analysis: ED-XRF (Energy Dispersive X-ray Fluorescence), documented by Microlab Material Testing Laboratory (Report No. ML/192A/1/24-25). Physical Characteristics: Appearance: The specimen features a translucent, botryoidal-like glassy core in a vivid teal hue. One side is heavily encrusted with a sandy, granular matrix (original soil/sand fused during the lightning strike), providing a beautiful contrast between the raw earth and the vitrified interior. Luster: Vitreous (glassy) on the exposed colored surfaces. Form: Irregular, branching shape characteristic of lightning-fused silica.
Approximately 60 mm × 40 mm (based on ruler measurements)
Other
Yes
Dear Krishna,
Thank you for contacting Mearto with your appraisal inquiry. I have reviewed your entry, thank you for the thorough information on your example.
What additional information you would want from Mearto regarding your submission? I provide guidance on Fair Market Value Averages from auction results of similarly sold examples. These are often unique mineral and fossil specimens. I have not found a Fulgurite example like yours. Typically these example are a larger "rod" like example with hollowed areas. From images, it appears that this may be a Chrysocolla Crystal or Adamite example; as the color and formation are part of this materials standard.
https://www.gemsociety.org/article/adamite-jewelry-gem-listings/
https://www.gemsociety.org/article/chrysocolla-gemstone-information/
I do not note the ILAC verification of the Microlab testing facilities certifications website.
