dolmen - a prehistoric megalithic tomb consisting of a capstone supported by two or more upright stones, most having originally been covered with earth or smaller stones to form a barrow.

(mineralogy) anatase

green (color) / verdure / a new bud or shoot / (archaic) in the Edo Period, an apprentice to a high-ranking courtesan, from ages six or seven through thirteen or fourteen

green

a female given name / a surname

mineralogy

mineral oil

(mineralogy) ulexite

Great works are performed by perseverance.

kill two birds with one stone, do one task and finish two or more goals (literally, “one stone, two birds”)