Home & Garden > Decor Home > Room Decor in stock Addition Studio Asteroid Oil Burner in Onyx: Using the warmth from just a candle, this beautiful burner diffuses essential oils throughout your space. It’s carved from black marble, meaning each piece is unique. The cool brass accents are minimal and functional—just drop your essential oil of choice in the dish up top and a tea light in the holder down below.90% stone, 10% brass 3.15″ x 3.15″ x 2.15″.