it has no cleavage
it has no cleavage
a diamonds cleavage is the cleavage of a diamond
Rubies exhibit a conchoidal breakage pattern, which means they tend to fracture in smooth, curved surfaces rather than along specific cleavage planes. This characteristic is due to their crystalline structure, primarily composed of corundum. When broken, rubies can produce sharp edges and may show irregular, rounded shapes, reflecting their toughness and durability.
halite and pyroxene
Yyitrium Aluminum Garnet
it has no cleavage
Garnet has no cleavage, meaning it does not break along distinct planes when subjected to stress. Instead, garnet exhibits a conchoidal fracture, breaking with a smooth, curved surface similar to glass.
Quartz does not have cleavage. However, it does have fracture. Its fracture is conchoidal.
The mineral that fits this description is garnet. Garnet has a hardness of 6.5-7.5 on the Mohs scale, meaning it can scratch glass. It has a non-metallic luster, exhibits fracture rather than cleavage, and is commonly found in a dark red color.
cleavage
Fracture
Hematite has a characteristic fracture, meaning it breaks irregularly with rough or jagged edges and no smooth cleavage planes.
the cleavage is Poor
Sapphire has a mixture of both cleavage and fracture characteristics. It has poor cleavage in one direction and conchoidal fracture, which means it breaks with smooth, curved surfaces similar to glass.
It has both cleavage and fracture.
Cleavage
It has both: uneven fracture, and perfect cleavage in three directions.