May 23,  · Gemstones are like people—some are tougher than others. The hardness of a gemstone is determined by something called the Mohs scale, a scale which rates a gemstone on its hardness measured from 1 to 10, 1 being the softest a stone can be and 10 being the hardest.

The Mohs scale ranks gemstones and minerals in hardness from 1 to 10. The lowest number 1 represents the softest minerals and 10 corresponds to 

The Mohs Hardness Scale was developed by German mineralogist, Friedrich Mohs in 1812. The scale consists of 10 readily available minerals of particular hardness 

1.48 Ct Rare! Gem Type: COLOR CHANGE GARNET. Hardness: 7.5 MOH's SCALE. Total weight and Stone sizemay slightly vary from piece to piece. Many inclusions shown are not visible to the naked eyes. Color may not ppear as exactly in real life due to variation between computer monitors.

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Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al 2 O 3) with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium.The name sapphire is derived from the Latin "saphirus" and the Greek "sapheiros", both of which mean blue. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange

What Is the Mohs Hardness Scale? The Mohs scale ranks gemstones from 1 to 10, with 1 being the softest and 10 the hardest. A stone's Mohs 

Mohs scale is based on whether one of the gemstones could scratch another; the stronger one marks the softer one. The hardness scale is not like stairs, 

We use the Mohs Scale of Hardness to calculate how hard our different gemstones are. Go Go. My Account; Login; Create a New Account; Shopping Cart; There are NO items in your shopping cart; Continue Shopping; Gemstone Hardness Scale . MOH'S SCALE OF HARDNESS . 10 . Diamond . 9 . Corundum . 8 . Topaz . 7 . Quartz . 6 . Feldspar . 5 . Apatite . 4

Hence gem stones having a similar hardness can scratch each other. Procedure for Hardness testing: Two (2) common methods used for scratch hardness test are: Hardness Pencils: In this, pointed fragments of standard minerals on Mohs' scale (4 to 10) are mounted on metal or wooden holders. The hardness point should be applied firmly to some

Hardness defines the durability of the gemstone, the ability to retain its surface finish and polish. Moh’s scale is used to measure the hardness of a stone. It is a relative and not an absolute scale and created to compare the hardness of gemstones. This scale rates hardness of minerals on a scale of 1 to 10.