The Gem Mill

Crystal Grottoes Caverns has added a flume to provide a gem mining opportunity at our caverns throughout the year. Purchase a bag of gems, fossils or treasures in our store and use the running water in our flume to wash away the sand to discover the gems, treasures and minerals in each bag.

The Caverns Gem Mill Experience
Each bag has sand & treasure to sift at our new gem mill!

The Gem Mill Experience has been restocked and Gift Cards are now available.
Ask to purchase at front desk.

Small Gemstone Bag $9.00
2 lbs sand, 4 oz of gemstones

Fossil Bag $12.00
2 lbs sand, fossils + shark teeth

Large Gemstone Bag $15.00
4 lbs sand, 8 oz of gemstones

Emerald Ruby Bag $17.00
4 lbs sand, 4 oz of emeralds and rubies,
+ 4 oz of gemstones

Treasure Bag $18.00
4 lbs sand4 oz of gemstones, 3 seashells,
5 world coins, 1 arrow head

Explorer Bag $35.00
6 lbs sand, 4 oz of gemstones, 3 seashells,
5 world coins, 1 arrowhead
4 oz of fossils + shark teeth,
1 amethyst or citrine druze, and 1 geode

Arrow Head Bag $7.00
2 Ibs sand, 7 arrowheads

World Coin Bag $7.00
2 lbs sand, 7 coins

Seashell Bag $11.00
2 Ibs sand + a mix of seashells

Geode Druze Bag $16.00
4 lbs sand, 6 oz geodes (whole and broken)
and 1 amethyst or citrine druze