Education

Within Three Color Grades (14.02)

Grading color in mounted diamonds is very challenging.

Within Three Color Grades (14.02)

Grading color in mounted diamonds is very challenging.

Emerald Cut Estimation (11.16)

Emerald cut diamond estimation.

Emerald Cut Estimation (11.16)

Emerald cut diamond estimation.

Oval Weight Estimation (11.19)

Estimating the weight of the oval brilliant diamond.

Oval Weight Estimation (11.19)

Estimating the weight of the oval brilliant diamond.

Heart Shape Weight Estimation (11.20)

Heart Shape Estimation (11.20)Heart Shape Formula: Length x Width x Depth x .0059 x GTA x Shape AdjustmentAgain, like the oval an LWA is not employed.#1 Example of formula in...

Heart Shape Weight Estimation (11.20)

Heart Shape Estimation (11.20)Heart Shape Formula: Length x Width x Depth x .0059 x GTA x Shape AdjustmentAgain, like the oval an LWA is not employed.#1 Example of formula in...

Pavilion Angle 5.09

If the pavilion angles are too steep the light will exit out of the opposite side after first reflecting once inside the diamond.

Pavilion Angle 5.09

If the pavilion angles are too steep the light will exit out of the opposite side after first reflecting once inside the diamond.

The Critical Angle 5.08

This escape route is the critical angle, which is 24.5˚. This is actually more accurately described as an imaginary cone where the point starts at the surface entry or exit...

The Critical Angle 5.08

This escape route is the critical angle, which is 24.5˚. This is actually more accurately described as an imaginary cone where the point starts at the surface entry or exit...