These gorgeous aromatherapy necklaces are handcrafted by a glass artist here in Asheville, NC. Each one is uniquely beautiful, with swirling colors and designs. These aromatherapy vessels come in three main hues: blues, warm earth tones such as sand/natural/green, and ruby reds. The picture features blue glass, and we'll soon have pictures of all the color choices. Each one comes with a simple black cord and measure approximately 1"width x 1.5" height. To use, fill the glass with a few drops of Essential Oil, hang around your neck and enjoy the aroma. If you wish to specify a certain color preference in the "COMMENTS" section at the end of the online order form, we'll do our best to match our stock to your needs.Click Aromatherapy Glass Jewelry for more pictures of available color/style options.