These Glow-in-the-Dark Pebbles by Pure Garden add a fun, whimsical touch to any outdoor area. This 500-count pack of decorative rocks are powered by light absorbed from almost any light source, including natural sunlight and Fluorescent, UV, and LED lamps, making it easy to keep them constantly glowing. Their design and small size make them an excellent addition to flower beds, fountains, ponds, and fairy gardens and for lining walkways, driveways, and patios.IMPORTANT: PURE GARDEN is committed to providing the consumer with the absolute best price and value on our entire line of products. NOTE: This is an exclusive product of PURE GARDEN and ONLY GLOW-IN-THE-DARK PEBBLES by PURE GARDEN are GUARANTEED to be genuine. Avoid buying counterfeit products and transacting with unauthorized sellers.GARDEN STONES - The glow-in-the-dark rocks come in a pack of 500, so there are plenty of pebbles to add to any area in and out of the home, and their initial pale green hue turns a vibrant green once they''re fully charged by artificial and natural light.VIBRANT ACCENT DECOR - These glow-in-the-dark rocks for outdoor and indoor use add a fun, colorful touch to outside spaces like pathways, ponds, flower beds, fairy gardens, and driveways, as well as to inside areas, such as fish tanks and potted plants.LIGHT ABSORBING - These durable and weather resistant landscaping rocks absorb sunlight throughout the day and UV, LED, and fluorescent lighting as a backup method, so they''re able to still vibrantly glow once the sun goes down and on cloudy days.ECO-FRIENDLY MATERIALS - Constructed from resin and photoluminescent pigment, these garden decorations are nontoxic and pose no harm to humans, animals, and plants, making them safe for use in and around the home, including in a goldfish tank.PRODUCT DETAILS - Materials: Resin and Photoluminescent Pigment. Dimensions: (L) 0.50" - 0.80" x (W) 0.20" x (H) 0.80" - 1.20" (Approximate Sizing as Each Stone Varies). Color: Green.