ACROSS:
4. ORB
5. FAERIE
7. IRON
8. KOI
9. MYSTERIOUS
12. WAND
13. DIVE

DOWN:
1. UNI
2. GREEN
3. NEGG
5. FACEMASK
6. PORKSTEAK
7. ICECAVES
10. ITCHY
11. FISH

Thanks Luke for posting today's answers in the comments. :)