Moonstone is also the birthstone for those wonderful Librans (although I know there are a few rogue ones out there) and also Cancer (they're up next get your gifts in early)
Moonstone enhances feminine energies and relieves emotional stress.  It's a really good stone to wear when your hormones are not playing ball and is also said to bring luck
It's been wrapped in copper to enhance the properties of the crystal and infused with reiki from me 
It's just £16 which includes free uk postage, a cord necklace and optional gift bag