Slab with fine cellular detail, showcasing the fossilization process where original bone was replaced by silica over millions of years. Color variations in agatized dinosaur bone arise from trace minerals: iron creates reds and oranges, manganese brings black tones, and other mineral inclusions can add gray, yellow, or even bluish hues

49.08 grams / 62.1 x 44.8 x 10.2 mm