Safe & Long Lasting: Each black obsidian crystal is a naturally formed stone, without the use of dyes or other artificial coloring methods, it will never fade and can be used for long-lasting decoration

Feature: Black aquarium gravel is 5-7mm (0.2"-0.27"), 0.5 Lb/Box. Made of high-quality natural stones, carefully processed into irregular shapes to create a unique and eye-catching look. (Please clean pebbles before use to bring out the dazzling color of the stone)

A Good Helper for Plant Decoration: Obsidian crystal chips can help reduce splashing and keeps the soil in the pot. Add vitality to your plants while keeping potted plants thriving

Natural Healing Crystals: Different types of crystals have different meanings. Such as enhancing your positivity and concentration, and bringing you good luck and energy. Black obsidian rock is known for helping to form a barrier against physical and emotional negativity.

Wide Application: These black obsidian gravel are not only suitable for home decoration, but can also be given as a birthday or Christmas gift to family and friends. Perfect for decorating aquariums, succulent plants, vases and DIY handcraft projects