Multi-scale Cullinan Sand (fine sand) dataset, comprising of 18 triaxial, 6 bender-element shear wave tests, and 52 in-situ field Bevameter plate-sinkage and in-situ shear tests.

A comprehensive multi-scale dataset on Cullinan sand encompassing 18 laboratory triaxial (CU/CD) tests, 6 bender-element shear-wave measurements, and 52 full-scale in situ Bevameter plate sinkage and shear experiments performed using a custom four-degree-of-freedom Bevameter across five density states. This dataset provides an open benchmark for the calibration and validation of FEM, DEM, SPH, PINNS, and empirical soil models at both laboratory and field scales. Owing to the fine quartz composition of Cullinan sand, the data also serves as a relevant analogue for lunar regolith mobility and vehicle–terrain interaction studies.