2C-B-BZP forms clusters of short dark needles and light crosses that grow long as branched blades. Both forms are observed when 2C-B-BZP is dissolved in water, 10% hydrochloric acid or acetic acid. The blades are bright under crossed polars whereas the needles are very faint.
2C-B-BZP with gold bromide reagent forms individual yellow, light crosses that float in the drop. The crosses are bright yellow under crossed polars. The crosses are not visible under crossed polars when they are oriented along the plane of the slide.
Platinic chloride forms large, skin like colorless square and rectangular plates with indented edges. The plates are faintly blue under crossed polars. Leafy blades are also observed along with the plates but they are not characteristic of 2C-B-BZP and do not grow reproducibly.