Omara

From Tardis Wiki, the free Doctor Who reference

Omara was an alien who worked with Gerrard Pulman to create fake jewelery. She could shape gemstones and remove impurities without tools. She started killing people who threatened her. She was killed by Pulman when she wanted to leave. She spent her time travelling seeding worlds with potential threats to her people with bombs which would destroy worlds. (AUDIO: Precious Annihilation)