COLOUR TYPES

SGI’s color type and traditional color trade name are assembled on Color Codex System alongside the natural gemstone color master set. Since there are boundaries between color varieties of gemstones, we face hardships to label exact color grades. Therefore, SGI gemological laboratory has formed internal standards such as light source, cutting, clarity, saturation, tone, chemistry and spectroscopy to unfailingly provide details of gemstones on our reports.

Ruby

  • Pigeon Blood
    RedPigeon’s blood color is traditionally the term used to label the finest color of Myanmar (Burma) rubies, especially from Mogok, Nant Yar Seik and Mong-Hsu. Known from Mogok individuals, a pure red with blue transmission, is locally called Pigeon’s blood and a pure red with yellow transmission is called Rabbit’s blood. Both these colors are approved as Pigeon’s blood by gem labs, globally. The Pigeon’s blood coloured rubies also originate in Mozambique, Madagascar, Vietnam, Tanzania & other countries.
  • Mogok Red
    The color, Mogok Red is almost the same color to the Pigeon’s Blood’s color, this Mogok Red color in Myanmar (Burma) was traditionally called “A Ye Ku” which was very much adored by Myanmar people. To describe the Mogok red color, it contains a pure red color, transiting intense to vivid including blue or yellow saturations. The Mogok red ruby, originates in Mogok and Mong Hsu, also similar colour in Mozambique, Thailand, Vietnam, Madagascar and other nations.
  • Medium
  • Strong
  • Vivid
  • Deep

Sapphire

  • Royal Blue
    The term describes the best colour in Blue Sapphire, reminiscent of the finest blue used in clothing for Royal families.
  • Cornflower Blue
    Describes the best colour in Blue Sapphire, reminiscent of the incredible hue found in wild cornflower, lighter than the Royal blue and silky overall appearance.
  • Hot Pink
    Describes the best pink color in Pink Sapphire and Pink Spinel.
  • Light
  • Medium
  • Strong
  • Vivid
  • Deep

Emerald

  • Emerald Green
    Describes the best colour in Emerald, reminiscent of the Vivid Green found in Columbia emerald mines.
  • Light
  • Medium
  • Strong
  • Vivid
  • Deep

Jade

  • Imperial Green
    The finest quality jadeite, almost transparent with a vibrant emerald green colour (green of strong saturation) is known as Imperial Green
  • Lavender
    The name Lavender is derived from the Latin words “livere” or “lividus” meaning bluish colour, it relates the flower name to its appearance that contain bluish and pale purple shade.Not just this colour, makes the gemstone beautiful in nature, it also states the sense of royalty and nobility.
  • Light
  • Medium
  • Strong
  • Vivid
  • Deep