Rarity

Rarity is a measure of how 'advanced' an item is. Rarity is detemined by taking the sum of an item's components. For example: Dirt (Rarity 1) and Cave Background (Rarity: 1) can be spliced to make a Door (Rarity: 1+1=2). As an item requires more steps to splice, it will typically gain a higher rarity.

Chemical Combiners also work to increase the Rarity, combining 10 Chemical G (Rarity: 1), 5 Chemical B (Rarity: 25), and 5 Chemical Y (Rarity: 15), you get a Steel Table (Rarity: 1 + 5 + 15 = 41). This does not apply to recipes including the Transmog Crystal, or a few other select recipes.

Rarity directly controls:
- Gem drop rate (from blocks, as well trees)
- Grow time

Rarity has no effect on block drop rates from trees, or seed drop rates from blocks.