英和和英

a volcanic rock called obsidian

weaverbirds

albatrosses

a jewel, called garnet

a mineral, called chiastolite

a heliograph

a heliograph

a heliograph

a heliograph

a type of stone tool, called a core tool

a duck-billed dinosaur

rough gemstones

a stone cave

helium cryostat

a stone called black granite

a stone implement used to strike something

an iron will

an adamantine will

a gas, called formaldehyde

brecciated rock

a jewel called sardonyx

an etude in the key of E minor

lime-light

rocks that are dug up with coal

the black playing pieces used by one of the two players of the game Go

a pantograph

a printing type called antique

a heriogram

pickerelweed

lime-stone