Gas giant of corundum clouds would have a striking appearance, with its clouds made of shimmering, metallic corundum crystals. The corundum clouds would give the planet a brilliant blue hue, with glints of pink and purple when caught in the light. This unique feature would make the gas giant stand out among other planets in the universe. The hex color code for a deep blue corundum crystal is #00688B, for a pink corundum crystal it is #FF69B4, and for a purple corundum crystal it is #800080. These colors combined would create a stunning and otherworldly visual on the surface of the gas giant 51 Pegasi.