- D
-
- Decomposition
- Decrepitation
- Dehydration
- Dendrite
- Dendritic
- Density
- Deposit
- Detrital
- Detritus
- Devitrification
- Devitrify
- Diagenesis
- Diamagnetic
- Diamagnetism
- Diamondlike (luster)
- Diaphaneity
- Diaphanous
- Dichroic
- Dichroism
- Diffract
- Diffraction
- Dike
- Dipyramid
- Dipyramidal
- Disilicate (subgroup)
- Dispersion
- Dodecahedral
- Dodecahedron
- Dollar
- Double refraction
- Doublet
- Doubly terminated
- Druse
- Drusy
- Dry lake
- Dry lake deposit
- Ductile
- Ductility
- Ductilability
- Dull (luster)
- Dump
- Dusting