Patent ID: 8158258

Claim:
Polycrystalline diamond, comprising: a plurality of diamond grains defining a plurality of interstitial regions; a metal-solvent catalyst occupying a substantial number of the plurality of interstitial regions, the metal-solvent catalyst present in an amount of about 1 weight % to about 6 weight %; wherein the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of about 115 Oersteds (“Oe”) or more; wherein the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a specific magnetic saturation of about 15 Gauss·cm 3 /grams (“G·cm 3 /g”) or less; wherein the plurality of diamond grains and the metal-solvent catalyst of the at collectively exhibit a specific permeability of about 0.060 G·cm 3 /g·Oe to about 0.090 G·cm 3 /g·Oe; and wherein the polycrystalline diamond exhibits a G ratio of at least about 4.0×10 6 .