Bellerophon

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COLOR GRADING

Trade names must have a good proportion in cut, light return,  chromophore present and or absent, fill specific criteria in chemistry and light absorbance, Have a good transparency and color homogeneity. 

Each Color trade name has its own definition, which can be strict or widely open to subjectivity, our color master set are open to public in our offices.

Color grading is based solely on color and mineral identification, no origin determination can restrict the application of a color trade name but some specific and complex geological setting promote specific color trade name as such some origin are more likely to received specific color grading.

ruby color grading
sapphire color grading
emerald color grading

Color Trade Name

Pigeon Blood

The term originate from Burma (Myanmar) to describe the best color in Ruby. It's suppose to be reminiscent of the Red color of a pigeon fresh blood or reminiscent of the blood surrounding the eyes of a pigeon. 

Royal Blue

The term is used to describe the best color in Blue Sapphire, reminiscent of the finest blue used in clothing for Royal families.

Cornflower

The term is used to describe the best color in Blue Sapphire, reminiscent of the incredible hue found in wild cornflower, lighter than the Royal blue and a silky overall appearance.

Lavender

The term is used to describe the best color in Violet and Purple Sapphire, reminiscent of the unique hue found in wild lavender.

Padparascha

The term is used to describe the best color in Orangy Pink Sapphire, reminiscent of the unique hue found in wild lotus flower.

Hot Pink

The term is used to describe the best color in  Pink Sapphire.

Muzo Green

The term is used to describe the best color in  Emerald, Reminiscent of the Vivid Green found in Muzo old mine.

Paraiba

The term is used to describe the best color in  Cuprian Elbaite Tourmaline, Reminiscent of the Vivid greenish Blue found in Paraiba old mine.