This is a seriously chunky handmade Lampwork glass ring in a US size 6.5 or UK size M. It is flat centre top and then domed (curved) to each side of centre (hope that makes sense) It features 24k gold foil and Sterling silver foil encased in crystal clear glass. It is beautifully smooth inside there are no sharp edges anywhere. The ring is a whopping 27mm x 26mm on top (2.7cm x 2.6cm or over 1") then the curved sides are approx 20mm (2cm or 3/4") and then it graduates to 6mm at the back. It is not a thin and delicate ring, it is chunky and substantial and will last a life time with proper care. There is no "give" in a glass ring so please be sure of your size before purchase and if you are unsure of your size then please measure your finger when your hand is cool. It is made from the finest Moretti/Effetre (Italian glass) and properly kiln annealed overnight in a digitally controlled kiln for lasting strength and durability. I am a member of SRAJD (Self-Representing Artists in Jewellery Design) Member no 0686.