Here is something about Astro again-- from their Website:
About Astro Gallery of Gems
| Considered the world's most established gem and mineral gallery, Astro Gallery of Gems is located in the heart of New York City across from The Empire State Building. Our 10,000 Square Foot showroom has thousands of minerals, gems, fossils and pieces of rare and unusual jewelry on display.|
We carry specimens suitable for the novice as well as the most advanced collector. We have everything from tumbled stones to 2000lb amethyst geodes.