Glass
Since dust contains particles of quartz, it can scratch the surfaces of many household materials and objects, like this glass turtle. Anything lower than a 7 on the Mohs scale of hardness is vulnerable. Photo by Avenue 51. Public domain.
Article: A World of Crystals
Credit: Avenue 51
| Gemstone | Artisanal Glass |
| Natural or man made | Lab-made |
| Gem State | Carved |
| Color | Colorless |
| Transparency | Transparent |