Citrine Crystal Tumble Stones 

The spiritual meaning of Citrine is its yellow hues symbolizing the spiritual qualities of joy, abundance, and transmutation. ... Citrine also represents spiritual joy since it spreads positive, energetic light around its aura and is said to be one of only two crystals which do not need to be recharged or purified.

size 3-4cm - size & shape varies due to Mother Nature:)