LICENSE EXEMPT: Trinitite Specimen is a non-radioactive sample collected legally before the collection ban. Trinitite has lost its radioactivity over time due to the natural process of half-life decay. SAMPLE SIZE: Trinitite Speciment size and color will vary. PAPERWEIGHT SIZE: Size approximately 3.25" x 3.25" x 1.5" HANDMADE TRINITITE PAPERWEIGHTS: These are high-quality handmade paperweights. IMAGES SCIENTIFIC INSTRUMENTS INC, manufacturing science instruments and kits for over 25 years. Trinitite specimen is authentic and collected legally before the ban on collection. Trinitite specimens are non-radioactive. Trinitite specimens will vary in size and color. These are high-quality handmade paperweights. Paperweight size is approximately 3.25" x 3.25" x 1.5" Shipping Information: We are always in compliance with Section 13 from part 40 of the NRC Nuclear Regulatory Commission rules and regulations and Postal Service regulations specified in 49 CFR 173.421 for activity limits of low-level radioactive materials. The item will be shipped in accordance with Postal Service activity limits specified in Publication 52. Radioactive minerals are for educational and scientific use only. The sale of trinitite ore is in compliance with all U.S. Federal regulations (Part 40) and NY State Regulations (10 NYCRR Part 16 and 12 NYCRR Part 38) as defined under Appendix A exemptions.