Figures of the Article

• Diamond/graphite phase diagram^[1]
• Schematic diagram of HPHT method
• Foreign HPHT lab-grown diamonds: a.Sumitomo Electric of Japan; b.NDT of Russia
• HPHT lab-grown diamonds from Huanghe Whirl Wind Co. Ltd. from Henan Province: a.yellow type Ⅰ b; b.colourless type Ⅱa; c.blue type Ⅱb
• HPHT devices: a.BARS type press; b.BELT type press; c.HING type cubic press
• Large-size CVD lab-grown diamond^[24]
• Diamond synthesis by MPCVD method: a.MPCVD device; b.MPCVD diamonds in growth
• Growing large-size lab-grown diamonds by substrate splicing^[24]: a.Schematic diagram of diamond substrate splicing; b.Large-size CVD lab-grown diamond
• UV-Vis-NIR spectrophotometer(a) and Fourier transform infrared spectrometer(b)
• UV-Vis-NIR absorption spectra of type Ⅰ diamond(a) and type Ⅱ diamond(b)^[29]
• Mid-infrared spectra of various types of diamonds^[38]
• Photoluminescence spectra of type Ⅰ aAB diamond^[39]
• Raman spectrometer
• Raman spectrum of CVD diamond^[46]
• Laser flash thermal conductivity measuring instrument
• Hall effect testing instrument(a) and four-probe resistivity testing instrument(b)