FIELD: mining.
SUBSTANCE: invention relates to artificail gem diamonds identifiable with a certain person or animal. A personalised gem diamond is grown from a charge that includes carbon being a product of carbonisation of the material provided by the customer, powder of spectroscopically pure graphite and a marker for which at least two elements are used that are selected from a lanthanide group and taken in a arbitrarily prescribed ratio to the extent between 0.01 to 10 mcg /g.
EFFECT: improved authenticity of identification of a personalised diamond.
1 ex, 3 dwg
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