1. Diamond Identification

Methodology:

Using instruments such as infrared spectroscopy, ultraviolet spectroscopy, and electron microscopy, combined with methods such as microscopic observation, to identify cultivated diamonds

 

Standard:

The physical and chemical properties are the same as natural diamond, both of which are equiaxed crystalline materials composed of carbon atoms. The Mohs hardness is 10, the density is 3.52 (±0.01) g/cm, the refractive index is 2.417, the dispersion value is 0.044, and the characteristic peak of the Raman spectrum is 1,332cm

 

2. Carat:

Methodology:

Use electronic scales or weighing sensors to measure the weight of cultivated diamonds

 

Standard:

Carat as a standard weight measurement, such as 0.34Carat, 2.05Carat, etc

 

3. Clarity

Methodology:

Observation of cultivated diamonds using optical or electron microscopes

 

Standard:

Grade I (VVS, diamonds have extremely small internal and external characteristics under 10x magnification);

Grade II (VS, diamonds have small internal and external features under 10x magnification);

Grade III (others, diamond exhibits distinct internal and external characteristics under 10x magnification or visible to the naked eye from the crown, diamonds have both internal and external characteristics).

 

4. Color

Methodology:

Color scanner

 

Standard:

Pantone color

 

And we will continue to use Pantone color as the base to create more color standards, including multiple color lab diamonds

 

5. Shape

Methodology:

Gem refractometer

 

Index Standard:

Princess Fang:

Platform width ratio 67% -72%, full depth ratio 64% -75%, aspect ratio 1:1-1.05, no bottom tip, with 76 cutting surfaces;

 

Pear shaped (teardrop shaped):

Symmetrical wings on both sides, desktop located in the center, with no defects in sharp corners, table width ratio of 53% -63%, total depth ratio of 58% -62%, aspect ratio of 1.5-1.75:1, no bottom tip, with 71 cutting surfaces;

 

Radian:

Countertop ratio 60% -66%, depth ratio 59% -65%, aspect ratio 1:1, no bottom tip, with 70 cutting surfaces;

 

Emerald:

The four corners are of the same size, with strictly parallel lines and surfaces. The platform width ratio is 61% -69%, the total depth ratio is 61% -67%, the aspect ratio is 1.3-1.5:1, the linear bottom is pointed, and it has 62-70 cutting surfaces;

 

Heart shaped:

Table width ratio 53% -63%, full depth ratio 58% -62%, aspect ratio 0.9-1.1:1, no bottom tip, with 63 cutting surfaces;

 

Horse eye (boat shaped):

With a width ratio of 53% -63%, a full depth ratio of 58% -63%, an aspect ratio of 1.8-2.2:1, a crown ratio of 11% -16%, symmetrical sharp angles without defects, no bottom tips, and 58 cutting surfaces;

 

Asche:

Table width ratio 59% -65%, full depth ratio 60% -65%, aspect ratio 1-1.05:1, crown height 11-16%, with 58 cutting surfaces;

 

Cushion shaped (pillow shaped):

Platform width ratio 58% -63%, full depth ratio 58% -66%, aspect ratio 1-1.05:1, no bottom tip, with 58 cutting surfaces;

 

Oval shape:

Symmetrical at the shoulders, with a width to width ratio of 53% to 58%, a total depth ratio of 58% to 64%, a length to width ratio of 1.3-1.6:1, no bottom tip, and 58 cutting surfaces;

 

Circular:

Platform width ratio 52% -62%, full depth ratio 57.5% -63%, crown height 12.5% -17%, no bottom tip, with 58 cutting surfaces

 

Cutting Standard:

EXCELLENT (EX) Perfect: Almost all incoming light is reflected

 

VERY GOOD (VG) is very good: it reflects light of standard cutting grade

 

Good (G): Reflects most of the light that enters the interior of the drill

 

FAIR (F) is average: it can also reflect light, but its performance is average

 

POOR (P) difference: If all cutting standards are not met, it means that the cutting is very poor

 

 

6. Sustainable Growth

Methodology:

AIDI arranges 3rd party to check and verify

 

Standard:

(1) Equipment requirements:

The equipment required for producing and cultivating diamonds should comply with relevant international regulations, such as using efficient and energy-saving equipment to reduce energy consumption and environmental pollution

(2) Process requirements:

The production and cultivation of diamonds should comply with relevant international regulations, adopt efficient, energy-saving, green, and environmentally friendly process flow and technical parameters, and improve production efficiency and product quality

(3) Intelligent new productivity:

Green and environmentally friendly energy, ethical production processes, sustainability, the introduction of new technologies such as AI in design, production, cutting and polishing