Obsidian (Black, Flow Structure) - 1-kg Pkg.
Product Number: SB09547
In Stock (Ships within 1-2 business days)
Nasco packages its bulk Rock and Mineral Specimens in both 1-kg packages and packages of ten 3 cm x 4 cm specimens. This enables you to order specimens by weight for large projects or in presized specimens ready for lab and students identification.
The picture represents one sample from both the large 1-kg package and the small Bag of 10 (3 cm x 4 cm specimens).
Actual size may vary.