This model is designed similar to commonly found crystal, mineral, gem, and rock tokens found in several popular board games and also used as vase fillers.
These are 10x10x14mm.
To get less air capture in transparent filaments, and therefore lower buoyancy and clearer transparency, you may want to play with settings as suggested here: https://youtu.be/9qb25Gi4Jv0
The author marked this model as their own original creation.