Gem dragon

Gem dragons were a type of dragon with crystalline scales. They were aloof, solitary, and self-centered. They spent most of their time on the Inner Planes.

Amethyst Dragon
Amethyst dragons were wise and regal. They could be found serving as intermediaries between warring dragons, and even humanoid civilizations. An amethyst dragon had lavender skin, and its scales were shaped like naturally formed mineral crystals.

Crystal Dragon
Crystal dragons were the friendliest of the gem dragons. They were always curious, so they enthusiastically conversed with willing visitors. Crystal dragons were fond of the Elemental Chaos, but they might sometimes build ice palaces atop high, cold mountain peaks on the Material Plane.

Emerald Dragon
Emerald dragons were inquisitive about local history and customs. Their knowledge of particular areas was often beyond that of the best sage. These dragons were very paranoid and developing relationships with them was often difficult. When not on the Inner Planes, they preferred to stay near partly inhabited areas on the Material Plane, but kept their presence unknown.

Sapphire Dragon
Sapphire dragons were territorial, especially towards other dragons in the Elemental Chaos and the parts of the Material Plane that they claimed as their own. These dragons were anti-social towards all beings, but viewed the evil races of the Underdark as their enemies.

Topaz Dragon
Topaz dragons were unfriendly and selfish. While not malevolent, their behavior made dealing with them unpleasant and dangerous. They spent their time in the Elemental Chaos, but made brief trips into the Material Plane into lairs on secluded beaches or caves below the waterline. Their lairs were completely dry.