Lupinus Perennis Perennial Blue Lupine 500 Seeds Etsy Unakite Double Flare Stone Plugs (8 gauge 1 inch). ONE PAIR of Unakite stone double flared plugs. Sizes 8 gauge through 1 inch are approximately 3 8 inch in wearable area. Additional Info: Stone items are all hand made so they may slightly vary in size, color, and shape. All of our stones are guaranteed to be within 1mm of the stated size. If you need an exact measurement or better description of the item, feel free to email us before ordering. Stones are also a fragile material and can break if dropped or not handled correctly.