Blue sapphire is simple known as sapphire on the market.’ Sapphires get their amazing colors from trace elements such as iron, titanium, chromium, and others.

All red corundum with gem-quality are considered rubies. However, all other gem quality corundum is considered sapphires.

Blue Sapphire Stone

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Blue Sapphire are one of the most common gemstones that is considered to be the big 3 of colored gemstones after, Ruby and Emeralds. They are adorned for multiple reasons but we love Blue Sapphire Stone for the special glowing hue they have.

Gemstone Attributes

Mineral Corrundum
Chemistry Al2O3
Color Light - Deep Blue
Refractive Index 1.762 - 1.770
Birefringence 0.008 - 0.010
Specific Gravity 4.00
Mohs Hardness 9.0

Blue Sapphire Value

When estimating the value of blue sapphire stone, color is the most important element. While hue does count, the closer to a pure blue the better, so saturation is more important. The highest quality sapphires have vivid saturation. Tone is also an important consideration. Dark sapphires are too common and don’t reach high values.

After blue sapphires, pink and pink-orange padparadscha colors are the highest valued stones.

Blue Sapphire Sources

Sapphires can be found all over the world, but high-quality gemstones are much rarer and happen in fewer locations. These are some of the most notable sources:

  • Sri Lanka : An ancient source that still produces amazing sapphires of all colors. Most blue Ceylon sapphire originate from the country.
  • Kashmir : Stones from Kashmir set the standard for the evaluation of blue sapphires. Verified historic Kashmir Sapphire stones can sell for high prices. They possess a velvet texture and colors ranging towards purplish blue, combined with a strong to vivid saturation and medium dark tones. 
  • Australia : Sapphires from Australia tend to be darker in color, although some rare and fine examples come from the country. They have also found parti-colored stones, which are usually yellow and green or yellow and blue.
  • Myanmar : The country formerly known as Burma produces some of the highest-quality gemstones, especially sapphires. Violet blue in color, highly saturated and with medium to medium dark tones.
  • Thailand : The home of colored stones, Thailand produces blue sapphires in abundance. They tend to have fine hue and saturation, although some are strongly dichroic, with dirty green in a certain direction. This means the stone needs to be cut properly for it to not shine through.
  • Montana : The US state produces all colors of sapphires. They are known as ‘steely’ because they have greyish saturation. Sapphires from Yogo Gulch are an exception, as the have some of the world’s finest colors, although are rarely larger than one carat.

Blue Sapphire Properties 

Blue Sapphire or Corundum is the next hardest gemstones at 9.0 in Mohs Hardness after Diamond which has a 10.0 making sapphires very durable for everyday use.

Blue Sapphire Colors 

The Famous Gemstones Colors that describe Blue Sapphire in the Trade are

  • Royal Blue
  • Cornflower Blue
  • Peacock Blue

Blue Sapphire Care

The hardness of Sapphires stones is second only to diamonds amongst natural gemstones. It also has no cleavage planes. Because of this, it is an excellent stone for jewelry.

Most stones need no special wear and care precautions. However, it is recommended to avoid cleaning oil-treated sapphires with ultrasonic systems. To clean your gemstones at home, simply use warm water, soap and a soft brush, or take them to be professionally cleaned.