There are actually six stones in the scorpio sign. They include beryl, apache tear, aquamarine, coral, topaz and obsidian. These are all beautiful stones.
Modern choices for somebody born in November:
Traditional Birth Stone - Topaz
Modern Birth Stone(s) - Topaz or Citrine
For those born in late October, you may prefer to give the traditional stones for that month:
Traditional Birth Stone - Aquamarine
Modern Birth Stone(s) - Opal or Tourmaline