# Kaolin & clays and Sand & gravel

Their prices have moved together.

Source page: https://www.materialinsights.org/links/kaolin-and-clays-and-sand-and-gravel/

[Kaolin & clays](https://www.materialinsights.org/commodities/clays/) (commodity) and [Sand & gravel](https://www.materialinsights.org/commodities/sand_gravel/) (commodity): 1 relationship.

## How they are linked

### 1. Price link: shared demand

*Cost and price · Moderate · Both ways*

Brick, tile and pipe clays rise and fall with the same building activity that drives construction sand. The two indexes share a weak to moderate link, monthly moves at 0.25, yearly moves at 0.50 and 0.36 in the last five years, typical of local building materials.

- **0.25** monthly change correlation
- **0.50** 12-month change correlation
- **0.62** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.