Description All our rocks are carefully selected for educational study. They come in labelled trays. The trays are normally 3″ x 2″ size depending on the rarity of the specimen. Average specimen size is shown below. These are ideal for classroom teaching and are a size that can be easily passed round the classroom for students to get a feel for each type. Oolite or oölite (from Ancient Greek ᾠόν (ōión) ‘egg stone’) is a sedimentary rockformed from ooids, spherical grains composed of concentric layers. Pirates Cove, Weymouth, Dorset, UK Approx: 30-40mm
