Energized Feng Shui Crystal Tortoise with long life therefore in Vastu Shastra and in Feng Shui it gives Long Life. As in Puranas, Lord Vishnu took the form of a tortoise to uphold the earth and its beings during the Sagar Manthan; Lord Vishnu's Tortoise is the second avatar and is called as Kurma avatar. Tortoise is made of fine quality crystal. Crystal is a strong chi enhancer. Crystal tortoise is used to enhance career luck, longevity and health, wealth luck, family luck and education luck. As per Feng Shui, tortoises are best placed in the north or at the back portion of the premises or home.