Stones/Gems with W

• White diamond

  Real gemstone variety; a colorless diamond.

• White opal

  True opal variety; commonly called white opal.

• wood opal

  Legit opalized wood; accepted stone term.

• white quartz

  Common quartz variety; real stone.

• Wavellite

  Real mineral; sometimes cut as a gem.

• wardite

  Recognized mineral species; acceptable.

• White sapphire

  Genuine sapphire variety; a real gem.

• watermelon tourmaline
• white diamonds

  Plural of white diamond; still valid.

• witherite

  Real mineral (barium carbonate); accepted.

• White pearls
• whitestone

The words in the list Stones/Gems with W come from players of the word game Categories game.