Olivine in Basalt Matrix fish fossils Here's a large museum size

Here's a large museum size plate of peach red still bite bow ties on matrix

and cream mottled coloration

Location:   Madagascar

Weight: 177 grams

Olivine in Basalt Matrix fish fossils Here's a large museum sizeSize: 4 X 3 X 5. 5 Weight: 70 Gram Location: USA Product Description Olivine in Basalt Matrix is a natural volcanic rock specimen featuring green olivine crystals embedded within a dark basalt host rock. Formed during the cooling of basaltic lava, specimens from the USA are prized for their striking contrast between the vibrant green olivine and fine grained black basalt. Olivine has a hardness of 6. 57 on the Mohs scale, while the surrounding basalt