Authentic Trinitite Green Black Pearl 10.3 grams - Large

Authentic Trinitite Green Black Pearl 10.3 g Large Atomic Glass

This large 10.3-gram Trinitite specimen is authentic atomic glass formed during the Trinity test on July 16, 1945, near Alamogordo, New Mexico. Legally collected in 1948, this green-with-black specimen has a granular natural surface, a subtle black melt bleb, a rare pale pearl-like embedded glass shard, and minor red.

Trinitite 10.3 g Geological Context and Significance

Trinitite is fused desert sand formed by the extreme thermal and pressure conditions of the first atomic bomb test. This specimen preserves a direct material record of the Trinity test, the July 16, 1945, event that marked the beginning of the atomic age.

Unlike ordinary glass, Trinitite formed in a complex open-air detonation environment that included desert sand, steel tower material, copper-bearing components, indigenous minerals, and rapidly quenched melt. The result is a historically significant anthropogenic glass with distinctive color, texture, and compositional variation.

This example is especially appealing because it combines large size, green-black visual contrast, and a rare pale pearl-like embedded glass shard. The embedded feature gives the specimen a specific visual focal point rather than presenting only as a generalized piece of fused sand.

Trinitite Specimen Description

This specimen has strong display appeal as it is a larger atomic glass piece, with a rare multicolored specimen. At 5× it shows green glass, relict mineral grains, reddish/dark melt domains, and vesicles together within a single field. This specimen exemplifies a record of flash melting followed by extraordinarily rapid cooling. Numerous round-to-subround black cavities are visible throughout the glass. These are predominantly vesicles, representing gas bubbles trapped as the molten material quenched extremely rapidly. Some grains retain distinct angular outlines, while adjacent material has become glassy, illustrating the exceptionally short heating interval: individual mineral grains experienced markedly different degrees of melting over microscopic distances.

Macro #1 description (this exact specimen): The black bleb near the center is an irregular, rounded, dark globule enclosed within the silicate melt, surrounded by a diffuse, smoky, olive-brown zone. Its surface is strongly reflective in places—the bright white highlights on the right and lower margins indicate a smooth, glassy or opaque phase rather than simply a flat black mineral grain.

Macro #2 description (this exact specimen): At 5×, this trinitite shows a mottled pale green silicate glass containing relict mineral grains and an irregular dark reddish melt-rich zone. Several small rounded vesicles occur within the darker area, emphasizing the highly heterogeneous melting and rapid quenching of the original desert sediment.

Macro#3 description (this exact specimen): At 5×, this trinitite displays a distinctive marbled network of reddish-brown and black melt material threading through pale green glass. Rounded vesicles and partially fused mineral grains interrupt the darker bands, giving the field an especially complex, turbulent melt texture.

Images professionally photographed under controlled studio lighting using Zeiss optics and a pro-grade Canon camera.

Rarity & Significance

Questions Commonly Asked About This Trinitite Specimen

Add this large 10.3-gram Trinitite specimen to a serious scientific or historical collection while it remains available.