3850 million year old zircon-bearing Early Archean fuchsite quartzite:
From: Huangboyu, Eastern Hebei, China
Size: 32 cm

2.8 billion years old TTG Migmatite from the Taishan Complex, Northern China:
Size: 23 cm

3804 million years old trondhjemitic gneiss,
Baijiafen, Anshan (North China):
Size: 8 cm