The reason for the blue diamond

Blue diamonds are a type of colored diamond. Blue diamonds are because boron atoms create a sub-band in the crystal of a diamond. The acceptor band is capable of absorbing near-infrared radiation and long-wave wind-sensitive anti-dye printing, thus making the diamond blue. Natural blue diamonds are rare. Blue diamonds can be artificially synthesized, and synthetic diamonds can produce blue color by adding an appropriate amount of boron.

Reasons for blue diamonds:

Artificial

Synthetic diamonds produce blue color by adding boron to the vector. In the process of synthesizing diamonds, the nitrogen molecules in the space-filled materials are mainly left in the process of filling the raw materials, so the synthetic blue diamonds tend to be green. The green shades exhibited by synthetic blue diamonds are caused by the absorption of short-wave visible light by discrete nitrogen elements.

natural

Natural blue diamonds are rare and belong to type IIB. Natural blue diamonds contain no nitrogen but contain very little boron. The boron atom produces a acceptor band in the crystal of the diamond. The acceptor band is capable of absorbing near-infrared radiation and long-wave wind-sensitive anti-dye printing, thus making the diamond blue. The energy difference between the acceptor band and the valence band is small, and the valence band electrons can be transferred to the acceptor band under the action of heat, so that the diamond is conductive, so the blue diamond is a semiconductor.

The GR1 color center produced by the radiation also causes the nitrogen-free colorless type IIA diamond to produce a less saturated blue color. This GR1-coloured blue diamond contains no boron and its infrared absorption spectrum does not have typical blue diamonds and absorption peaks.

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