7 down, gem carved out in the shape of a dung beetle, (6) ???r??.
21 down, to attack in speech or writing, (7) i?????h.
10 across, handbook for mate, (9) ????a?i?n.
14 across, hugely popular book. (10) ??s?s?l?e?.
25 across, amounts of books, (7) ??l????.
28 across, Participate in cross-country sport. (9) o???n????.