Japanese boxwood, tsuge.  These chopsticks are very thin and used for picking up sweets.

Two sets of thin bamboo chopsticks, lacquered.   I think the dark spots were made by burning.  The bottom tip of those chopsticks are very sharp, so when I store them, I wrap the tips with tissue papaers.   Ocha utensils often come in washi paper.

Bamboo, Green lacquered

Bamboo, Red lacquered and Reversible