A realistic crystal cluster loosely based on some quartz samples I have. I tried to make this look as natural as possible. This can be used as seasonal decor, mini base items, tabletop terrain, or in aquariums or terrariums as hardscape. Additionally, no supports or brim are needed to print this model, so it should look super clean right off the printer.

If you are printing this for an aquarium, please increase the infill density to around 90% to ensure it will sink. Alternatively you can make small holes at the bottom and at the tops of the crystals to try to let air out, however I have not tested that with this model.