B₃L₁U₁E₁S₁T₁O₁N₁E₁S₁

12 points

BLUESTONES is validvalid

BLUESTONE, a bluish-gray building stone [n]

122,429 of 196,601 in NWL2023·also valid in CSW24

BLUESTONE, hydrated copper sulphate, aka blue vitriol [n]

25,545 of 280,887 in CSW24·also valid in NWL2023