This effect

Abalone is a common name for a group of marine gastropod mollusks

This is a beautiful piece of colored sea agate from the Bay of Fundy

Shape: Round Cut

the impact breccia inside the morphological depression of the Steinheim Basin is overlain by lake sediments and is obviously preserved in its original thickness and position

Impactite Fallback Breccia | Steinheim Basin impact structure | 77.2 gram Slice | Ries, Germany | SO24 Equinoid This effectThis is a fantastic Impactite Fallback Breccia from Germany weighing 77. 2 grams and measuring 79x66x11mm. Although not a meteorite, impactites and shatter cones are directly linked to them and their impacts. The Steinheim Basin today exhibits a distinct morphological depression that is 110 m deep and 3. 5 km in diameter; the height of the central uplift totals to more than 140 m. The original size of the pristine crater is estimated to be 3. 8 km