Slag

Easy to obtain
Slag specimen - rock identification

What is Slag?

Slag is a non-metallic by-product of smelting or glass creation. Slag can range from glassy to dull and stony in appearence, and has been used in construction, road building, and even jewelry design. The first record of the uses of slag has been found in ancient Egypt. Nowadays, slag with vibrant colors and unique patterns is a popular choice for decorative purposes.

Discover Values

Rarity
3.0out of 5.0
60%
Popularity
3.5out of 5.0
70%
Beauty
3.9out of 5.0
78%
Cultural Value
3.1out of 5.0
62%
Collection Value
3.6out of 5.0
72%

Slag Market Value Calculator

Estimate the market value of Slag using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Slag Localities Map

See where Slag is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Health & Safety Information

  • ⚠️Harm Reason: Others
  • ⚠️How to prevent the risks of Slag?

Quick Facts

Physical Properties

Color
Various colors, typically black, gray, brown, blue, green
Hardness (Mohs)
5.5 - 7
Luster
Vitreous, Dull
Crystal System
Amorphous

Chemical Properties

Also Known As

SlagLeland Blue Stone
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