Scaling　relationships　among　indentation　variables　such　as　the　maximum　indentation　displacement,　contact　depth,　the　ratio　of　load　over　contact　stiffness,　and　the　ratio　of　permanent　displacement　over　the　maximum　displacement　were　investigated　via　Berkovich　indentation　of　fused　silica.　Load-displacement　curves　were　characterized　by　power-law　functions　for　both　loading　and　unloading.　The　power　exponents　can　be　assumed　to　be　constant　for　loading　and　unloading.　Hardness,　elastic　modulus,　and　yield　stress　were　measured　to　be　9.8　GPa,　73.3　GPa,　and　5.5　GPa,　respectively,　for　fused　silica　that　can　be　assumed　to　be　elastic-perfectly　plastic.　The　empirical　algorithm　for　estimating　yield　stress　was　verified　for　fused　silica.　The　experimental　results　accorded　well　with　theoretical　prediction　and　dimensional　analysis.　The　expressions　obtained　can　be　used　to　check　indentation　data,　and　general　implications　of　the　relations　are　discussed.