Dinosaur Bone Amber / Polished Bone Fragment
Dinosauria indet. (Indeterminate dinosaur) • Body fossil, vertebrate bone structure encased or heavily mineralized, though visually resembles polished cabochons of amber containing organic matter or bone material, or possibly polished dinosaur bone (gembone)
Geological Period
Mesozoic (Cretaceous / Jurassic)
Estimated Age
66 to 150 million years
Preservation Type
Permineralization with chalcedony/quartz replacement (gembone) or exceptionally preserved amber inclusion matrix
Condition Assessment
Very Good, expertly polished with minor surface scratches on the display case membrane
Taxonomic Classification
Phylum: Chordata, Class: Reptilia, Clade: Dinosauria
Morphological Description
Polished cabochon-like smooth surfaces displaying internal cellular matrix structures, dark organic or mineral banding contrasted against warm amber-brown and reddish-orange tones, showcasing porous trabecular bone patterns under magnification.
Rock Matrix
Silicified matrix / microcrystalline quartz (jasper/agate replacement)
Formation & Location
Morrison Formation (USA) or Madagascar / Majunga Basin
Size & Dimensions
Small cabochon pieces approximately 15mm to 30mm in length
Value & Rarity
Estimated Market Value
$30 - $100 USD
Auction Estimate
$25 - $75 USD
Rarity Assessment
Uncommon
Scientific Significance
Provides insights into the fossilization processes of dinosaur bone through mineral replacement and the preservation of microscopic cellular structures.
Preparation Recommendations
Keep in a stable environment away from direct sunlight and extreme humidity. Store in a padded display case.
Notable Features
Striking high-contrast black and orange-brown cellular patterns mimicking amber transparency with deep internal depth.