How much is a London blue topaz worth?

How much is a London blue topaz worth?

The London Blue Topaz price per carat varies depending on the origin, transparency, clarity, cut, shape, size, luster, inclusions, and certificate it carries. Based on the mentioned quality combination the price of London Blue Topaz can start from 300 INR ($ 4.10) per carat to 3000 INR ($ 41) per carat and even more.

Is a London blue topaz a real topaz?

Is London Blue Topaz Real? Technically, yes! London Blue topaz stone is real, although it undergoes heat and irradiation to give it its deep blue colour. From certain angles, it may also have a slightly greenish tone.

Is London blue topaz natural?

London Blue Color & Treatment Although there is some blue topaz in nature, it is rare. When naturally blue topaz occurs, it is light in color. London Blue Topaz is generally brown or colorless material that’s been irradiated and then heat treated to obtain the dark blue, which does not occur in nature.

Does London blue topaz fade?

Although it is not one of the softest gemstones, blue topaz can be broken if hit hard. Although the color of topaz does not fade easily, exposing the stone for an extended period to high heat or direct sunlight may alter the gem’s hue over time.

How can you tell if a London blue topaz is real?

Tip #1: Look at the stone’s clarity As they are heat-treated, most of the blue topazes available today are eye-clean, which means they do not have inclusions visible to the naked eye. As such, if you notice any scratches, cracks, dots or tiny fractures on the gem, then it may not be a real blue topaz.

What is the difference between Swiss and London blue topaz?

Swiss Blue is a bright blue topaz with a light tone and light to moderate saturation. London Blue is a dark blue topaz with a moderate to dark tone and saturation. These two colors give jewelry buyers a choice of two blue colors. It is only slightly more expensive than Swiss Blue topaz.

Are citrine and topaz the same thing?

Citrine (quartz family) and topaz are actually unrelated mineral species. Topaz belongs to the silicate mineral family, not quartz. Before these differences were clear, many cultures called citrine (the yellow variety of quartz) by other names like gold topaz, Madeira or Spanish topaz—contributing to the confusion.

How is blue topaz formed?

Blue Topaz, the most commonly used Topaz color, is formed from colorless or lightly colored Topaz that is irradiated to make it blue, and then heat treated to stabilize the new color. Different forms of radiation treatment can produce different shades of blue.

What is blue topaz?

Blue topaz is the state gemstone of the US state of Texas. Naturally occurring blue topaz is quite rare. Typically, colorless, gray or pale yellow and blue material is heat treated and irradiated to produce a more desired darker blue.

What color is topaz?

Topaz colorColorless (if no impurities), blue, brown, orange, gray, yellow, green, pink and reddish pink