About Us

Astro-West-Main-Minerals-Diplay

Astro West is owned and run by Marc Tanjeloff, a third generation curator and store owner. In the 1960’s his grandfather, Julio Tanjeloff, began the Astro Minerals story with a lavish 16,000 square foot gallery showcasing items from all over the world in the heart of New York City.

Astro West is now Manhattan’s leading natural history gallery, specializing in museum-grade minerals, fossils, meteorites, and rare collectibles. Founded by Julios grandson, renowned dealer and curator Marc Tanjeloff, Astro West now carries forward a legacy of excellence rooted in decades of experience sourcing and presenting Earth’s most extraordinary treasures.

Astro West Store Front at 102 West 79th Street in New York City.

Astro West Beginnings: In 2015 with a son on the way, Marc was inspired to expand the family business to a new location on the West side bringing his discerning eye and passion for fine minerals to every customer and every piece.

Marc Tanjeloff is a respected figure in the mineral and fossil world and has spent over 30 years building relationships with top collectors, institutions, and mines across the globe. His expertise in authenticating rare specimens—from dinosaur fossils to Martian meteorites to special home decor pieces and gem-quality crystals—has positioned Astro West and his team as a trusted destination for both seasoned collectors and curious newcomers, all ages.

Marc’s commitment to innovation is evident in his adoption of modern technologies. Astro West accepts cryptocurrency, reflecting his forward-thinking approach to business: “You have to keep changing and adapting or you’re going to have a ‘closed’ sign on your door.” Astro West also offers a curated selection of our mineral and natural history pieces online at astrowest.com, on E-bay, Wayfair, Walmart, Tik-ToK and  on Amazon under our storefront name, AG Minerals.

Marc is actively involved in the local community and those who know him recognize him for his contributions as well as coming highly recommended by local business owners and his high end clientele. 

Through his dedication and genuine passion, Marc Tanjeloff continues to uphold and expand his family’s legacy in the gem and mineral industry. He blends three generations of his mineral‑collecting heritage with his own professional insights in an ever authentic and ethical way. 

Store Hours & Contact Information:

Phone: 646-781-9377
Email: [email protected]
Address: 102 W 79th St New York, NY 10024
Store Hours: Sun – Sat, 10AM – 7PM

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