The wearable area is about 1/4". The back flare is smaller than the front flare for easier insertion.
These are Non-Toxic, Non Radioactive, Non Carcinogenic, and Non hazardous according to the manufacturer of this special glass. The plugs need to be "charged", preferably with strong light, about 1 inch from artificial (florescent, incandescent, Halogen) light source. Black light and direct sunlight work too. The amount of glow time is determined by how long the glass was charged and how strong the light source is. They can hold a charge for up to 8-10 hrs with proper charging. They will glow brighter for the first 1-2 hours then hold a less intense glow for the rest of the night. It is suggested to charge them right before going into darkness. A portable LED flashlight or black-flashlight can recharge them on the go.
PLEASE NOTE: Glow-in-the-dark glass may have tiny black or brown specks in the surface of the plugs. This is the nature of the material and is NOT considered a defect.
Please note: 00g is 9mm. Order 10mm for larger 00g.
IMPORTANT POINTS ABOUT GLASSWEAR STUDIOS JEWELRY, PLEASE READ.
Glass body jewelry is hand made of natural materials, so gauge, length, color and design may vary. Such differences are NOT considered a defect.
For colored glass, smaller gauges are often lighter in color.
All GWS jewelry is sized to the millimeter. Gauges are approximate.
For items that come in pairs, you can expect that you will receive a pair of jewelry (including each individual piece within the pair) that is within .5 mm of stated size for jewelry up to 1/2" gauge (12.5 mm) and within 1mm of stated size for jewelry larger than 1/2" gauge. If you receive a pair that is not an EXACT match, please know that is the best matched pair available.
For Jellyfish, Mushroom, and Flame plugs, single flare 8g - 2g will be in "ball" flare style, and 0g and larger will be in the standard dome front style. Every gauge of double flared will be in the standard dome front style.