stalagmite

noun 0.865

speleothem

noun 0.688

icicle

noun 0.651

stilbite

noun 0.597

flowstone

noun 0.587

stylolite

noun 0.586

calcite

noun 0.566

travertine

noun 0.551

tufa

noun 0.542

cave

noun 0.539

stishovite

noun 0.536

limestone

noun 0.532

cavern

noun 0.531

tige

noun 0.528

tillite

noun 0.522

hailstone

noun 0.520

limescale

noun 0.517

crystal

noun 0.517

spicule

noun 0.515

stannite

noun 0.514

halite

noun 0.513

strop

noun 0.513

karst

noun 0.512

caving

noun 0.508

stibnite

noun 0.507

tektite

noun 0.506

strontianite

noun 0.506

fluorite

noun 0.505

cristobalite

noun 0.505

stromatolite

noun 0.504

selenite

noun 0.504

talc

noun 0.504

chandelier

noun 0.503

speleology

noun 0.501