To date I can pretty much attest to -0- movement with oak, maple, walnut, purple heart, poplar and Luan, Sapele and Meranti mahogany's. I got no experience doing inlay using pine products. However, I do ensure the male/female items are at least 15% MC when milled and at finish coat.
As for dims, I never embedded male items over 5/32 thick or ceramic products into wood, the materials will surely have dissimilar expand/contract rates. In the past when flooring we always placed rubberized membrane between oak flooring and bthrm tiles. The 1/8" membrane prevented buckling during the hot muggy summers up here
Never bite the hand that looks dirty!
The more you know the more you're worth