Originally purchased from Mudandleaves. Used about a dozen times. No damage to the cup. The crazing has started to darken, especially on the interior of the cup. This is pictured above. The crazing on the exterior has darkened a little, but barely so far. Should be able to get much darker with more use. Below is the original description from mudandleaves

"Volume filled to brim: Approximately 90ml

This teacup features a hand painted qinghua design by the studio artist. 

The color of this ruyao glaze is called 月白 "moon white." In most light it will appear to be an extremely pale blue. 

Shan Kiln ruyao has a glow and a depth that are a result of the ruyao glaze recipes of the studio. When firing the pottery, and as the body expands, crazing appears on the surface of the glaze. These 开片 or "opening cracks," are found on all ruyao and will expand on the glaze with use. They give each piece its unique character. 

These are handmade by Master Lee ShanMing 李善明. He has devoted himself to ru kiln products for nearly two decades."