Interrupted Diamond Growth
OwnerChien-Min Sunginventor
Life of this patent
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Abstract
A method for growing diamonds under high pressure high temperature (HPHT) is provided. In one aspect, such a method can include providing a growth precursor including a carbon source and a catalyst material, the growth precursor having a diamond precursor particle arranged at least partially therein, melting the diamond precursor particle, and growing a diamond particle by subjecting the melted diamond precursor particle and the growth precursor to temperature and pressure conditions sufficient for diamond growth. In some aspects, the resulting diamond particle can be utilized as a diamond precursor particle in a subsequent reaction to grow an even larger diamond particle.
Claims20
A method for synthesizing a diamond particle, comprising:
- providing a growth precursor including a carbon source and a catalyst material, the growth precursor having a diamond precursor particle arranged at least partially therein;
- melting the diamond precursor particle;
- and
- growing a diamond particle by subjecting the melted diamond precursor particle and the growth precursor to temperature and pressure conditions sufficient for diamond growth.
A method for synthesizing a diamond particle, comprising:
- placing a growth precursor including a carbon source and a catalyst material into a reaction vessel, the growth precursor having a diamond seed arranged at least partially therein;
- subjecting the growth precursor to a temperature and a pressure sufficient for diamond growth to produce a first diamond particle from the diamond seed and the growth precursor;
- reducing the temperature and the pressure to interrupt growth of the first diamond particle;
- adding additional growth precursor to the reaction vessel;
- increasing the temperature and pressure to melt the first diamond particle;
- and
- growing a second diamond particle by subjecting the melted first diamond particle and the additional growth precursor to temperature and pressure conditions sufficient for diamond growth.
A gem quality diamond, comprising:
- a plurality of color zones within the diamond, with each zone having a different color, and wherein there are no inclusion boundaries between the plurality of color zones.
Dependencies are inferred from the claim text.