Crystal mouthpiece made by Pomarico of Italy. Made using crystal with added special mineral components, it produces a warm sound. (The color of the mouthpiece changes depending on the light due to the characteristics of the material) Opening 1.21mm Facing 16.5mm Purchased in 2015 and used for only six months. The pitch is slightly low, but I liked the responsiveness and mellow tone. (The beautiful appearance too!) Recommended reeds are around 2 1/2 or 3. Thank you for looking.