Polished Mahogany Obsidian slab with reddish-brown and black bands, weighing 29 grams, shown against a pink background.
Polished Mahogany Obsidian slab with reddish-brown and black bands, weighing 29 grams, shown against a pink background.
Polished Mahogany Obsidian slab with reddish-brown and black bands, weighing 29 grams, shown against a pink background.
Polished Mahogany Obsidian slab with reddish-brown and black bands, weighing 29 grams, shown against a pink background.
Polished Mahogany Obsidian slab with reddish-brown and black bands, weighing 29 grams, shown against a pink background.
Polished Mahogany Obsidian slab with reddish-brown and black bands, weighing 29 grams, shown against a pink background.

Mahogany Obsidian Slab – 29 Grams – Polished Volcanic Glass for Collectors

Loving Coastal Living
$20.00 USD

This Mahogany Obsidian specimen weighs 29 grams and features rich swirls of reddish-brown against a deep black matrix. Its naturally polished sheen and rugged edges make it a striking piece for collectors or lapidary artists. Sourced from ancient volcanic flows, this slab captures the raw energy of Earth’s fiery origins.

  • Size Dimensions & Weight: Approx. 29 grams; irregular slab shape

  • Condition: Natural slab with one broken edge; polished face

  • Origin: Likely USA or Mexico (common sources)

  • Chemical Family: Silicate

  • Composition: Volcanic glass with iron inclusions

  • Color: Black with reddish-brown banding

  • Formation: Rapidly cooled lava with high iron content

  • Hardness: 5–5.5 on Mohs scale

  • Nickname: “Volcanic Ironwood”

Note: Some photographs were taken while the specimen was wet to enhance its natural colors.