The "sparkles" & crystals you see are actual crystals that grow from minerals in the glaze. This process is very connected to nature, science, and much, much more. Can you imagine your matcha from this reflection - what do you see in the patterns?
 
During the firing and cooling process. Leaf shaped pieces are made from real leaves rolled into the clay and glazed with original crystalline glazes
 
Crystalline Glazed High Fired Porcelain
Oven and Dishwasher Safe
Treat As You Would Fine China