Resources Links Natural Stone Institute Natural Stone Council Pennsylvania Bluestone Association Tile Association Marble Institute of America LEED Initiative Use Natural Stone Technical Data ASTM Certified testing results can be downloaded here: Absorption and Bulk Specific Gravity (C97) Compressive Strength (C170) Modulus of Rupture (C99) Abrasion Resistance (C241) Flexural Strength(C880) Thermal Solar Reflective Index Coefficient of Friction/Slip Resistance Honed Horizontal Slip (C1028/F609) Tompkins Bluestone can supply stone for any size project! Contact us today for a quote! Contact Us