The Ore Christmas 24 Day Gemstone Surprise Advent Calendar is a multicolor glass advent calendar with mixed shape natural stones. It is designed for adults and has a holiday theme. The calendar includes 24 pieces of surprise gemstones and has a length of 12 inches, a width of 6 inches, and a height of 12 inches. The advent calendar is manufactured in China by Ore Christmas and is set to be released in 2023.