it has a round shape
There is no such thing as a "pegmatite rock" in the Pokemon D/P games.
Pegmatite is used for feldspar, sheet mica, beryllium, tantalum niobium, and lithium minerals.
in the core
Pegmatite texture is a coarse-grained igneous rock texture characterized by exceptionally large crystals. These crystals can be several centimeters to several meters in size. The slow cooling of molten rock in pegmatite formations allows for the growth of such large crystals.
Pegmatite is an igneous rock that forms in the final stage of magma crystallization. It typically contains large crystals due to the slow cooling of the magma.
Pegmatite is classified as an igneous rock because it forms from the cooling and solidification of molten material, typically within the Earth's crust. Pegmatite is characterized by its large crystal size, which indicates that it cooled slowly, allowing the minerals to grow to a significant size.
The hardness of pegmatite can vary depending on its mineral composition, but it typically falls between 6 to 7 on the Mohs scale of mineral hardness. This means that pegmatite is harder than steel but softer than quartz.
yes
Feldspar, Mica, Quartzite
Beryl can be found in alluvial deposits from erosion out of pegmatite veins. This is the easy way, sorting through sand and gravel. The hard way is to attack the granitic pegmatite with tools and see what's inside.
Pegmatite rocks can contain some of the largest crystals found in nature, sometimes reaching several meters in length. These crystals are often visually striking due to their size and clarity, making pegmatites popular among mineral collectors and geologists.
Beryl is exclusively of a pegmatite mineral. When this pegmatite magma has a rich source of beryllium, the beryl crystals are formed. They are formed in high temperature veins by these beryllium bearing gas content.