A polycrystalline diamond compact, comprising: a substrate including an interfacial surface; and a polycrystalline diamond table including a first polycrystalline diamond layer adjacent to the interfacial surface of the substrate and at least a second polycrystalline diamond layer remote from the substrate, the second polycrystalline diamond layer exhibiting a second average diamond grain size that is less than a first average diamond grain size of the first polycrystalline diamond layer and/or the first polycrystalline diamond layer including a tungsten-containing material therein, at least an un-leached portion of the polycrystalline diamond table including: a plurality of diamond grains defining a plurality of interstitial regions; a metal-solvent catalyst occupying at least a portion of the plurality of interstitial regions, the metal-solvent catalyst being present in the at least an un-leached portion in an amount less than about 7.5 weight %; and wherein the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of 115 Oersteds ("Oe") or more and a specific magnetic saturation of 15 Gauss·cm 3 /grams ("G·cm 3 /g") or less, wherein the coercivity is measured in accordance with ASTM B887-03 e1 and the specific magnetic saturation is measured in accordance with ASTM B886-03. a substrate including an interfacial surface; and a polycrystalline diamond table including a first polycrystalline diamond layer adjacent to the interfacial surface of the substrate and at least a second polycrystalline diamond layer remote from the substrate, the second polycrystalline diamond layer exhibiting a second average diamond grain size that is less than a first average diamond grain size of the first polycrystalline diamond layer and/or the first polycrystalline diamond layer including a tungsten-containing material therein, at least an un-leached portion of the polycrystalline diamond table including: a plurality of diamond grains defining a plurality of interstitial regions; a metal-solvent catalyst occupying at least a portion of the plurality of interstitial regions, the metal-solvent catalyst being present in the at least an un-leached portion in an amount less than about 7.5 weight %; and wherein the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of 115 Oersteds ("Oe") or more and a specific magnetic saturation of 15 Gauss·cm 3 /grams ("G·cm 3 /g") or less, wherein the coercivity is measured in accordance with ASTM B887-03 e1 and the specific magnetic saturation is measured in accordance with ASTM B886-03. a plurality of diamond grains defining a plurality of interstitial regions; a metal-solvent catalyst occupying at least a portion of the plurality of interstitial regions, the metal-solvent catalyst being present in the at least an un-leached portion in an amount less than about 7.5 weight %; and wherein the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of 115 Oersteds ("Oe") or more and a specific magnetic saturation of 15 Gauss·cm 3 /grams ("G·cm 3 /g") or less, wherein the coercivity is measured in accordance with ASTM B887-03 e1 and the specific magnetic saturation is measured in accordance with ASTM B886-03.