Related by context. Frequent words. (Click for all words.) 60 flint 57 arrowheads 56 chert 53 basalt 52 soapstone 51 volcanic rock 51 petrified wood 51 garnets 50 jade 50 malachite 49 metallic 49 ocher 49 alabaster 49 quartz 48 quartzite 48 jasper 48 amethyst 47 tourmaline 47 earthenware 47 opal 46 opals 46 pottery shards 46 birch bark 46 quarried 46 mica 46 calcite 45 feldspar 45 topaz 45 sandstone 44 engravings 44 pewter 44 silvery 44 semiprecious stones 44 onyx 44 lapis lazuli 44 quartz crystal 43 galena 43 pumice 43 olivine 43 glass beads 43 intricately carved 43 stone carvings 42 ceramic 42 coppery 42 limestone 42 carvings 42 marble 42 pottery 42 terra cotta 42 ruby 42 granite 42 ebony 42 horsehair 41 cobalt blue 41 stones 41 gemstones 41 turquoise 41 graphite 41 gunmetal 41 silicates 41 semi precious stones 40 dinosaur fossils 40 rhyolite 40 greyish 40 driftwood 40 iridescent 40 gemstone 40 agate 40 Germanium 40 silicate 40 crystals 40 beadwork 40 iridium 40 terracotta 40 spears 40 lacquer 39 garnet 39 enameled 39 hematite 39 incised 39 artifacts 39 silica 39 ceramics 39 etchings 39 copper alloy 39 tungsten carbide 39 seashells 39 enamels 39 chrome 38 hunter gatherers 38 stoneware 38 chisels 38 clays 38 sapphire blue 38 aluminum oxide 38 wood 38 russet 38 emeralds 38 stone 38 Inscriptions 38 bluestones