Turquoise Stone: Scorching Sands.
Ruby Stone: Emerline Falls
Topaz Stone: Emerline Falls (if you bought any of the previous
stones in the relationship shop then the Topaz Stone will replace
the last stone you will get).
Big Wallet: Turquoise Stone + Wallet
Huge Wallet: Ruby Stone + Big Wallet
Enormous wallet: Huge Wallet + Topaz Stone
^from a guide.
Get the gold or higher chest to increase the chance of getting it.