If the crystal grows quickly then it is going to be the quicker one to grow, and thus larger, though not always the most valuable since underground crystals can take millions of years to come to be.
All rocks have crystals in them, what ever king they are. If they cool down slowly they tend to have bigger ones and if they cool down quickly they have smaller ones. SIMPLES!!
Cooled slowly underground the pseudo crystals of columnar basalt, such as the Giants Causeway in Ireland may be in a metre size range.
Typically, intrusive crystals are larger than extrusive crystals because intrusive rocks cool slowly beneath the Earth's surface, allowing larger crystals to form, while extrusive rocks cool quickly at the surface, producing smaller crystals.
"Larger than if it cools quickly" is about all that's definitively possible to say.
Granite cools slowly underground, allowing for the formation of larger crystals. This slow cooling process contributes to its coarse-grained texture and characteristic patterns.
gets bigger and changes color
Glass is a solid. It is melted silicon that has cooled quickly. A mineral that cools slowly can become a crystal.
Lava will cool quickly compared to underground magma.
When magma cools slowly within warm rock underground, it forms crystals with a coarse-grained texture. This type of crystal texture indicates that the minerals had time to grow larger before the magma solidified, reflecting a slow cooling process. Examples of rocks with coarse-grained textures include granite and diorite.
A longer period of time at a mineral's crystallization temperature and pressure range, will result in increased crystal size. Rocks like granite have visible crystals because the minerals within the rock cooled very slowly underground. Rocks like obsidian have no crystals because they cooled very quickly after eruption above ground.
go to crystal waterfall in the morning and move the thing slowly and get the bigger fish on the area you are on. hope this helps
Igneous rocks that cool slowly have larger crystals because there is more time for the crystals to grow and develop before the rock solidifies. In contrast, rocks that cool quickly have smaller crystals due to limited time for crystal growth during the rapid cooling process.