| Mineral / Material | Density | Group |
| no guarantee | various sources | |
| Sanidine | 2.53 - 2.56 | Feldspar |
| Sapphire | 3.99 - 4 | Corundum |
| Sapphirine | 3.42 - 3.48 | |
| Scapolite | 2.57 - 2.74 | |
| Scheelite | 5.9 - 6.1 | |
| Scolecite | 2.25 - 2.29 | |
| Scorodite | 3.1 - 3.3 | |
| Sellaite | 2.97 - 3.15 | |
| Serandite | 5 - 5.5 | |
| Serendibite | 3.40 - 3.52 | |
| Shomiokite-(Y) | 2.52 | |
| Shortite | 2.63 | |
| Siderite | 3.96 | |
| Sillimanite | 3,24 | |
| Simpsonite | 6.7 - 6.8 | |
| Sinhalite | 3.47 - 3.49 | |
| Smithsonite | 4.3 - 4.5 | |
| Smoky Quartz | 2.65 | Quartz |
| Sodalite | 2.27 - 2.33 | Sodalite |
| Spessartine | 4.12 - 4.20 | Garnet |
| Spherocobaltite | 4.13 | |
| Sphalerite | 3.9 - 4.1 | |
| Spinel | 3.57 - 3.72 | Spinel |
| Spodumene | 3.1 - 3.2 | Spodumene |
| Staurolite | 3.65 - 3.77 | |
| Stibiotantalite | 6 - 7.40 | |
| Stolzite | 7.9 - 8.34 | |
| Sugilite | 2.74 | |
| Sunstone | 2.62 - 2.66 | Feldspar |
| Sussexite | 3.30 | |
| Taaffeite | 3.60 - 3.61 | |
| Tanzanite | 3.26 - 3.38 | Zoisite |
| Thaumasite | 1.88 - 1.90 | |
| Tiger's Eye | 2.6 - 2.7 | Quartz |
| Titanite / Sphene | 3.52 - 3.54 | |
| Topaz | 3.5 - 3.6 | |
| Topazolite | 3.7 - 4.1 | Garnet |
| Tourmaline | 2.98 - 3.3 | |
| Tremolite / Hexagonite | 2.99 - 3.03 | |
| Triphylite | 3.50 - 3.58 | |
| Triplite | 3.44 - 3.9 | |
| Tsavorite | 3.60 - 3.68 | Garnet |
| Tugtupite | 2.33 | |
| Turquoise | 2.6 - 2.8 | |
| Ussingite | 2.48 - 2.51 | |
| Uvarovite | 3.77 - 3.81 | Garnet |
| Uvite | 2.97 - 3.15 | Tourmaline |
| Vaeyrynenite | 3.18 - 3.22 | |
| Vanadium Beryl | 2.6 - 2.8 | Beryl |
| Vesuvianite | 3.32 - 3.42 | |
| Viridine | 3.16 - 3.20 | Andalusite |
| Vlasovite | 2.92 - 2.97 | |
| Wavellite | 2.36 | |
| Whewellite | 2.21 - 2.23 | |
| Willemite | 3.9 - 4.2 | |
| Witherite | 4.22 - 4.31 | |
| Wulfenite | 6.5 - 7.5 | |
| Xenotime-(Y) | 4.4 - 5.1 | |
| Xonotlite | 2.71 - 2.72 | |
| Yugawaralite | 2.20 - 2.23 | |
| Zektzerite | 2.79 - 2.80 | |
| Zircon | 3.9 - 4.71 | |
| Zoisite | 3.3 | |