Chromatherapists use blue to treat depression and pain. Darker shades of blue are also thought to have sedative properties and may be helpful for people who experience insomnia or other sleeping disorders. Product Specifications: • Hand Polished Stones • 1000 grams • AAA Quality • Size: +/- 2/3/4 cm • Total Weight: +/- 1 kg • Treatment: None • High Quality Our Shipment: ✓ Packaged with Care ✓ Insured Shipping by UPS/PostNL ✓ Shipped within 1/2 business days ✓ No damages warranty About the Seller: ☆ +99% Top Rated Seller on Catawiki ☆ Registered company since 2004 ☆ Direct import from Brazil & Africa