This expanded collection allows a study in detail of the response of these minerals to the range of ultraviolet rays. 15 specimens approximately 1 l/2 by 1 l/2". Grades 6-12. Also available with ten handheld long-wave blacklights (Short-wave not available). Need more blacklights? Purchase extra long-wave hand-held blacklights. Information on how to place your order by fax or by telephone. Shipped directly from the manufacturer. Not available with rush shipping. Delivery time estimated at 10-14 days or less. Gift wrap not available. Product Number AM2375