Fossil Coral Slab — 117 g | Barisan Mountains, Sumatra

A striking fossil coral slab from the Barisan Mountains of Sumatra, with a dense field of cream-rimmed radial corallites set in warm ochre-brown matrix. Each natural cup varies in shape and tone, creating a richly detailed pattern across the cut face.

This one-of-a-kind geological specimen has a naturally irregular outline and is ideal for a mineral collection, study shelf, or natural-history display. It weighs 117 g. The accompanying specimen note records the locality as the Barisan Mountains, Sumatra, and an approximate age of 18–23 million years; the age is supplied provenance information and has not been independently verified.