24PCS Crystal Growing Kit Valentines Day Gifts for Kids, Science Kits with Valentines Day Cards for Kids School Exchange STEM Science Experiments Planting Crystal Classroom Party Favors Boys Girls valentines crystal is up for auction in Toys & Games. The current bid is $1.50, 95% below the $28.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.