Granite Grit...cheaper option? Crushed rocks? | BackYard ...- what can i use to crush rocks or granite , · Is there any cheaper option instead of the $7 bag of granite grit? Any type of rock that we could buy by the lb or just crush up ourselves for them??Decomposed Granite Standard Pathway Mix - Kafka Granite LLCDecomposed Granite Standard Pathway Mix Naturally occurring decomposed granite, commonly known as DG, is created as granite is compressed over millions of years and broken down into a combination of sand and gravel.