Seer Stones - Clear Quartz
Seer Stones are generally Quartz that have been naturally tumbled in rivers. This will give them a frosted look on the outside.
When these frosted stones are cut and polished on one end, these faces or "windows" show their clear inside.
Seer stones have been used as an aid to scrying for a long time as it can show you the past, future and present by taking you deep within your inner self. Seer stones will come to a person when they are ready and willing to take an honest look within and ready to accept the truth.