Mexican Onyx 98lb 24x15x6 1018 microsurface Allow this to reach gelation

Allow this to reach gelation (about 6 hours at room temperature) before pouring epoxy

and other traumas for your stage

and the hardness is lower than that of ordinary pencils

Proper blade and bucket dimensions are important for obtaining the best batch mix (see USG IG503 Plaster Mixing Procedures for details)

and kiln firing

Mexican Onyx 98lb 24x15x6 1018 microsurface Allow this to reach gelationThis stone is 24x15x6 and about 98lb PLEASE NOTE As with all natural materials there is some variation amongst pieces. The color swatches above are examples of stones and do not represent the colors or patterns of every piece or any piece in it's entirety. Mother Nature controls what is inside the stone and she hopes you will find beauty in them all. There is no bad stone only unrealized sculpture.