Samantha Challogan 
ciencia de las gemas [PDF ebook] 

Colorful gems sparkle and shine. Where do these precious stones come from? Learn about gemology, the science and study of gems, with this Spanish book created in collaboration with the Smithsonian Institution. It features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from Smithsonian employees working in STEAM fields. Perfect for school reports and projects, this Spanish book is ideal for English language learners. Ignite a curiosity about STEAM topics with this high-interest text!