Unique and rare specimen of Celestite,sometimes called celestine,in an egg shape geode with many all natural celestite crystals that measures approximately 2 1/2 x 3 1/2 inches and weighs approximately 15 oz from Madagascar.Celestite or celestineis a mineral consisting of strontium sulfate,,SrSO4. The mineral is named for its occasional delicate blue color. Celestine is the principal source of the elementstrontium, commonly used in fireworks and in various metal alloys.Shipping in the US mainland will be FREE by USPS priority,all other shipping locations worldwide, where allowed by law,will be $31.99 USPS priority.