These Coasters are hand carved from the highest quality Connemara marble,the difficulty in making these is the inclusion of the centre recess, this recess makes this a fine candle holder as well. They measure 4 inches in diam and 1/2 deep, the recess is 3.25 diam. The price is per single coaster, I have listed 6 as they are great matchers from the same block of marble. All of my products are guaranteed to be authentic Irish marble, all hand-crafted in the west of Ireland. My family business Connemara Marble by Gerard has been specialising in Connemara marble jewelry and gifts since 1950 and I sell only high quality genuine Irish marble items that have been quarried and hand-cut in Ireland. I do not deal in Chinese jade or counterfeit marble nor do I condone the practice. I work only with authentic Irish Connemara marble, Ulster marble, Cork marble, and Kilkenny marble and I take great pride in crafting each piece with care. My business is based on quality and trust and your satisfaction is my top priority. If you are a jewellery designer be sure to check out my section of guaranteed Irish marble beads and cabochons, crafted by hand here in the West of Ireland from locally-sourced Irish marble. For more information about my business and about Irish marble in general please see my etsy store profile page.