This effect is caused by the interference of light within the layers of the stone

Clarity:  VVS

This is a beautiful and colorful specimen combining green Apophyllite

but it still retains apatite's crystal shape

Natural Bi-Color Tourmaline Crystal | Raw Tourmaline | 10mm 3.9ct | Africa Canada This effect is caused byThis is a natural raw bi color tourmaline crystal, it is 10mm in length and has a weight of 3. 9ct. This pink and green tourmaline is transparent and has not been treated in any way. It is 100% natural. It is believed that Tourmaline can be used to repel negativity. It is said to enhance one's physical wellbeing by providing an increase in physical vitality, emotional stability, and intellectual acuity. Product Type: Tourmaline Specimen Size: