كورندم: الفرق بين النسختين

| image = Several corundum crystals.jpg

| caption =

| strunz = 04.CB.05

| dana = 4.3.1.1

| unit cell = a = 4.75 Å, c = 12.982 Å; Z=6

| color = Colorless, gray, brown; pink to red, orange, yellow, green, blue, violet; may be color zoned, asteriated mainly grey and brown

| habit = Steep bipyramidal, tabular, prismatic, rhombohedral crystals, massive or granular

| twinning = Polysynthetic twinning common

| cleavage = None – parting in 3 directions