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INCLUSIONS FREQUENTLY SEEN IN CVD GROWN SYNTHETIC DIAMONDS |
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Black inclusions (likely non-diamond carbon) ranging in size from pinpoints to large ‘crystals’ are a common feature in CVD grown diamonds.
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Black inclusions (likely non-diamond carbon) ranging in size from pinpoints to large ‘crystals’ are a common feature in CVD grown diamonds.
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A comet-like tail formed as growth continued on after a black inclusion disturbed the structure of this CVD diamond.
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A comet-like tail formed when growth continued after the appearance of a black inclusion disturbed the formation of this CVD diamond.
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Feathers are commonplace in CVD grown diamonds. Their appearance can usually be described as bright, whitish, frosted or thick.
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Feathers are commonplace in CVD grown diamonds. Their appearance can usually be described as bright, whitish, frosted or thick.
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The series of bright white feathers in this CVD diamond are a familiar scene but provide little assistance in the identification of origin.
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A more magnified view of the bright white feathers pictured to the left.
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A cloud of black inclusions arranged in a single plane provides a trace to the layered growth and stop-start cycles of CVD synthesis.
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A planar cloud of small whitish inclusions with ‘tails’ provides a clue to the direction of growth of this CVD diamond. This feature likely developed during the stop-start cycle of CVD growth.
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A single sharp plane of graining is a familiar scene in faintly colored CVD grown diamonds. Though origin identification cannot be proved solely on planar inclusions and graining, they are distinct remnants of CVDs layered past.
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A single sharp plane of graining is a familiar scene in faintly colored CVD grown diamonds. Though origin identification cannot be proved solely on planar inclusions and graining, they are distinct remnants of CVDs layered past.
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INCLUSIONS FREQUENTLY SEEN IN HPHT GROWN SYNTHETIC DIAMONDS |
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By far, the most frequent characteristic in HPHT grown synthetics are opaque metallic inclusions; a remnant of their origin in molten metal flux.
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