Topaz Vs Sapphire Hardness

Diamonds and only diamonds can scratch other diamonds.

Topaz vs sapphire hardness. It is one of the hardest naturally occurring minerals mohs hardness of 8 and is the hardest of any silicate mineral this hardness combined with its usual transparency. Let s take for example tanzanite mohs 6 5 7 and topaz mohs 8. White sapphire is one of the hardest gemstones with a mohs rating of 9. Mohs hardness of 8 and is the hardest of any silicate mineral.

This is where sapphire reigns. White sapphire is the best choice between white topaz vs white sapphire in terms of hardness. Although cz is hard it s hardness is not the same as that of diamond. Topaz is a very hard material 8 on the mohs hardness scale and blue topaz is a very pretty stone that is available in a.

Sapphire hardness and durability. The color of sapphire is a strong point used when estimating the prices of this gemstone. While topaz is considerably harder than tanzanite it is often much cheaper with the exception of imperial topaz and this highlights the futility of using only gemstone hardness as a price guide. This hardness combined with its usual transparency and variety of colors means that it has acquired wide use in jewellery as a cut gemstone as well as for intaglios and other gemstone carvings.

As a result white sapphire doesn t scratch as easily as white topaz. However unlike pink topaz pink sapphire is a precious gemstone that shares qualities with its more widely known blue counterpart. The higher the rating on the scale the harder the. This is part of the allure of using sapphires in engagement rings.

So hardness alone cannot be used as a price guide. It s harder than white topaz which has a rating of 8 on the mohs scale. It is not easily damaged or scratched and is excellent for everyday wear. Topaz is a silicate mineral of aluminium and fluorine with the chemical formula al 2 si o 4 f oh 2 topaz crystallizes in the orthorhombic system and its crystals are mostly prismatic terminated by pyramidal and other faces.

Comparison of cubic zirconia vs diamond vs white sapphire vs moissanite hardness and density. On mohs scale hardness scale for mineral classification zirconia stands at 8 5 while diamond is rated 10. Sapphire ranks 9 on the mohs scale and is the third most durable gemstone used in jewelry after diamonds and moissanite. Measuring gemstone hardness can be tricky.

The hardness of a material may vary slightly with composition and also with its state of aggregation. Corundum 9 is twice as hard as topaz 8 and diamond 10 is four times as hard as corundum. While the hue counts the price is also dependent on the purity of sapphires. Topaz popularity is certainly not surprising.