Blue Sapphire Stone Hardness

The mohs hardness scale and chart for select gems home learning center gemology reference charts materials the mohs hardness scale and chart for select gems igs may receive customer referral fees from the companies listed in this page.

Blue sapphire stone hardness.

Besides blue sapphire and ruby the corundum family also includes so called fancy sapphires they come in violet green yellow orange pink purple and intermediate hues. Because of the remarkable hardness of sapphires 9 on the mohs scale the third hardest mineral after diamond at 10 and moissanite at 9 5 sapphires are also used in some non ornamental applications such as infrared optical components high durability windows wristwatch crystals and movement bearings and very thin electronic wafers which are used as the insulating substrates of very special purpose solid state electronics especially integrated circuits and gan based leds. Parti sapphires show two or more colors. What makes sapphires blue.

If you have two sapphires and you know for sure one is real use it to scratch the second one. Rubies emeralds diamonds oh my there are so many types. Top 10 best types of stones for rings 13th sep 2020. Sapphire is an extremely famous and beautiful blue gemstone.

Birefringence is 0 007 0 010. It is liked by everyone because of its eye catching blue color hardness strength and luster. This is evidence of the hardness of sapphire and a testament to its place at number 9 on the mohs hardness scale. The mohs hardness scale starts with talc at 1 being.

Sapphire is a precious gemstone a variety of the mineral corundum consisting of aluminum oxide α al 2 o 3 with trace amounts of elements such as iron titanium chromium vanadium or magnesium it is typically blue but natural fancy sapphires also occur in yellow purple orange and green colors. Some stones exhibit the phenomenon known as color change most often going from blue in daylight or fluorescent lighting to purple under incandescent light. The sapphire is a beloved gemstone that has been cherished. Blue sapphire hardness is 9 on moh s scale of hardness.

Refractive index ri lie between 1 760 1 778. Optic character of blue sapphire is anisotropic. See how sapphires are rated in hardness toughness and durability on the mohs scale the gemstone and mineral guide to hardness. If the real sapphire leaves a scratch on the second sapphire then the second one is not real or is at least of lower quality.

Mohs hardness scale for gemstones 9th sep 2020.