Black tourmaline is known to purify energy and transform dense energy into a lighter vibration. https://live.staticflickr.com/65535/40923173453_afdfa0b14b_b.jpg All crystals are without any polishing & processing. https://live.staticflickr.com/65535/40929213593_f412322faa_b.jpg Essential oil 1-5 drops on the crystal (• 1 drop is about 0.05ml), depending on the size of the space or personal preference. Type: Raw Black Tourmaline Size: about L 4 - 7cm Q'ty: about 7 - 10pcs (depends on the size) Color: Black (surface with some white spot) Material: Raw Black Tourmaline Can Size : 7.5 x 8.5cm **Packing: Crystals & Can (individual pack)** The crystals come from raw minerals. Due to the naturalism, the stones may have tiny flaws. These flaws are not blemishes but add to the stone's unique and natural beauty. Please note due to stock variety, color or shape of mixed products may vary from photo samples shown on the website. https://farm8.staticflickr.com/7808/32499381357_3871e49da3_b.jpg The essential oils are for 1. Calm Citron Lemon / Bergamote / Rosmarinus officinalis Note: Fruity 2. Relieving Wild Lavender / VeraOrange Douce / Cedrus Atlantica Note: Woody 3. Pleasure Geranium Rosat / Lavender / Basil Note: Floral 4. Concentration Rosmarinus officinalis / Citron Lemon / Menthe Verte Note: Grassy ▷ More Essential Oil https://www.pinkoi.com/product/wBTiVsBz Pure Essential Oils vs. Fragrant Synthetic Oils The pure essential oils have a beautiful scent while the scent of 'fragrant' oils or melts is more powerful and will last longer, they are a chemical compound designed to replicate a real plant extract. Product Details: Essential Oil: 5ml Bottle The capacity: 5ml Material: Glass Color: Brown ▷ The Trial Pack of Oil: 2ml Caution For external use only. Keep away from children & pets. Highly concentrated - avoid eyes & skin. Keep away from fire and high temperature.