White Sands Proving Ground/Trinity Site, Tularosa Basin, Alamagordo, Socorro County, New Mexico.

Fused gray-green masses, sand that was fused by the first Atomic bomb blast on July 16, 1945. Specimens are priced by approximate weight, and the measurement is approximate, using the longest dimension:

5gm = a piece that weighs between 5 and 6 grams, and will measure 2.5 to 3cm. 

4gram = a piece that weighs between 4 and 5 grams, and will measure 2 to 3cm.

3 gram = a piece that weighs between 3 and 4 grams, and will measure 2 to 3cm.

2 gram = a piece that weighs between 2 and 3 grams, and will measure 2 to 2.5cm.

1 gram = a piece that weighs between 1 and 2 grams, and will measure 1.2 to 2.5cm.

1/2 gram = A lot of five pieces that weigh 1/2 to 1 gram each, and measure about 1 to 1.5cm in size.

The vials contain approximately 1 gram of pieces up to about 6mm.