A Bohème with a transparent stone Montblanc has offered exclusively in the model Bohème Platinum Crystal, that is, not in the black variant. With a black Bohème with a white stone in the clip, a counterfeit is therefore to be assumed. Additional indications of this are untidy transitions between cap top, clip and cap; on the original these components close flush. A definitive clarification can be made by Montblanc service.