Mineral | Corrundum |
---|---|
Chemistry | Al2O3 |
Color | Greenish Blue - Bluish Green |
Refractive Index | 1.762 - 1.770 |
Birefringence | 0.008 - 0.010 |
Specific Gravity | 4.00 |
Mohs Hardness | 9.0 |
Teal sapphires are captivating gemstones known for their unique blueish-green to greenish-blue colors. Here's a detailed summary of the information you provided The name "teal" sapphire is derived from the color of the common teal or Eurasian duck, specifically the blueish-green hue around the bird's eyes. Teal sapphires were named after their dark cyan-like hue.
Mineral | Corrundum |
---|---|
Chemistry | Al2O3 |
Color | Greenish Blue - Bluish Green |
Refractive Index | 1.762 - 1.770 |
Birefringence | 0.008 - 0.010 |
Specific Gravity | 4.00 |
Mohs Hardness | 9.0 |
Teal sapphires' value is determined by the traditional 4 C's (carat, cut, color, and clarity). An excellent cut with absolute symmetry and outstanding polish and brilliance is highly valued. The gem's color should be medium-toned blue-green, green-blue, or green with hints of blue, significantly affecting its value. Clarity ranging from eye-clean to internally flawless is desirable. Price per carat can vary: 1 – 1.5 ct: $650 – $1,200 per carat 2 – 3 ct: $850 – $1,600 per carat 3 ct and above: $1,000 - $2,500 per carat, depending on size and quality factors.
Teal sapphires display a gradient of shades, including blue, green, yellow, and space grey. The most valuable teal sapphires have an equal or near-equal composition of blue and green primary colors, with hints of yellow. The rarest teal sapphires exhibit a 50/50 blue and green composition, creating a mossy aquamarine-like color.
The primary source for teal sapphires is Australia, considered by some as the only genuine source. Other sources include Madagascar, Ethiopia, Nigeria, and Montana in the United States, with stones from these regions also appreciated for their beauty.
Teal sapphires are exceptionally durable with a Mohs hardness of 9, making them ideal for daily wear, including engagement rings. They are resistant to scratches and damage. While most teal sapphires may have silk inclusions, they are rarely visible to the naked eye and don't detract from the gem's brilliance.
Teal sapphires are durable with a hardness of 9 on the Mohs scale. Cleaning can be done with a soft toothbrush, warm water, and mild soap free of abrasives. Ultrasonic cleaning is suitable for teal sapphires. Caution should be exercised when cleaning jewelry settings, as the materials holding the gem may be softer. Professional jewelers can provide safe cleaning and maintenance services.
Teal sapphires are prized for their distinctive color and durability, making them a beautiful and valuable addition to jewelry pieces, especially for those seeking a unique and vibrant gemstone.