Stone: TourmalineColour: PinkSize: 2.5, 3, 3.5, 4, 5, 6mmShape: RoundQuality: AAOrigin: AfricaWeight per Piece:2.5mm: 0.06 carat3 mm: 0.10 carat3.5mm: 0.15 carat4 mm: 0.23 carat5 mm: 0.40 carat6mm: 0.72 caratThese stones have not gone through any artificial treatment. The colour of these Pink Tourmaline is 100% natural. These have not been dyed or heated.The gemstones are graded primarily on the colour and cut.The mm tolerance is +/- 0.2 mmPlease look at the linked images for reference--------For any inquiries regarding the products, bulk orders or customisation, please feel free to leave a message. We usually reply within 1-2 day business days---------Made in IndiaYour loose Tourmaline will be shipped in an extremely secure package to make sure its safe arrival at your door. We ship daily i.e. Monday to Saturday so that your product reaches you as soon as possible