The most valuable colors of topaz are the golden orange-yellow type known as 'Imperial Topaz'. The deepness of the color with reddish hues adds value to the gem and is very desirable.Mar 3, 2016
What color blue topaz is most valuable?
The most sought after blue topaz stones are Swiss Blue, a bright blue stone with a light tone, and London Blue Topaz.
What is the most expensive type of topaz?
Imperial Topaz
How can you tell the difference between topaz and sapphire?
Topaz although a hard gemstone, can easily break, cleave, and is brittle. Topaz is less dense in comparison to the yellow sapphire and it is a bright dark yellow colored gemstone, whereas, yellow sapphire is a light yellow coloured transparent gemstone.Mar 15, 2021
How can you tell the difference between a blue sapphire and a blue topaz?
The main difference between sapphire and topaz is the fact that sapphire is a gemstone, whereas London Blue topaz is a nesosilicate mineral. ... Sapphire is a very dark, rich and deep blue. While London Blue topaz does have its own impressive inky hue, it's quite a bit lighter than a sapphire stone.Dec 14, 2020
How can I tell if my topaz stone is real?
There are a few easy ways to tell a real topaz apart from quartz. The first characteristic to keep in mind is the hardness factor. An original topaz will scratch glass while quartz will not leave a mark on it. Moreover, a real topaz is also cool to touch and it gets electrified easily.
How do you tell if a gem is a sapphire?
To test if a sapphire gemstone is real, look for air bubbles in the stone. These bubbles are a consequence of the creation of synthetic stones in laboratories using glass. Inspect the sapphire gem from all angles to ensure there are no bubbles, as this could indicate an artificial stone.
What does a sapphire jewel look like?
It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors. Red corundum stones also occur, but are called rubies not sapphires. ... Sapphire is the birthstone for September and the gem of the 45th anniversary.
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.
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.
What Colour is London blue topaz?
What is London Blue Topaz? By definition, London Blue Topaz is topaz stone that has a specific medium blue color. It's darker than aquamarine or Swiss Blue Topaz, but lighter than what we normally look for in a blue sapphire.
Is London blue topaz semi precious?
London Blue Topaz is by far the most searched Semi-precious gemstone on Google. ... All London Blue Topaz is heated in the market, naturally only Sky Blue Topaz and Light Swiss Blue Topaz can occur, which is extremely rare and expensive too.