grapestone
Noun
Meaning
A seed of the grape.
(geology) A botryolite or other cluster of sand-sized grains cemented together shortly after deposition to form a botryoidal clump.
Source: en.wiktionary.orgSynonyms
amethyst
purple gem
eggplant gem
indigo rock
lavender stone
lilac gemstone
mauve crystal
orchid crystal
periwinkle jewel
plum gem
thistle gemstone
violet quartz
plumstone
mulberry stone