American Heritage Dictionary
(1)
Century Dictionary
(2)
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
One can mistake polished agate for chalcedony or onyx.— The Lore of Gloranthan Gems and Near-Gems by Martin R. Crim Part II
One can mistake cut and polished amethyst for chalcedony or glass.— The Lore of Gloranthan Gems and Near-Gems by Martin R. Crim Part II
One can mistake Topaz for chalcedony, brown diamond, root or stem grow stone, or unpolished hawk's eye or tiger's eye.— The Lore of Gloranthan Gems and Near-Gems by Martin R. Crim Part II
Chalcedony has been looked up 205 times, favorited once, listed 24 times, and commented on 0 times.

American Heritage Dictionary (1)
Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about once a year.
Recent Lookupsrecoil · impregnable · gowned · newsletter · blueprint |
Recent FavoritesTelePalmter · Espoo · stick-to-it-iveness · supine · doxastic |
Recent Pronunciationsmilosrdenstvi · lichen-covered · futon · sagacity · monoragngocious |