Not a real diamond, no.
Ruby has a hardness of 9 on Mohs scale of hardness . So any gemstone with hardness more than 9 would scratch a ruby and that includes, diamond, synthetic moizzanite and synthetic diamond.
Its very easy. Read the underwritten instructions1 Clean the ruby with a damp cloth or toothbrush to remove any debris or marks. Dig your fingernail into the gemstone to see if you can leave a scratch. If you can, it's not a ruby.2 Gently scratch the ruby with a one cent coin. Choose an area that you don't mind damaging slightly, such as the underside of a gemstone that will be set in a ring. If the gem marks, then it's not a ruby.3 Scratch the gem with a series of other items. Use a piece of glass and a steel knife. The knife has a hardness level of 7 and should not be able to scratch the ruby. Scratch the red stone with rough sandpaper. If there is no noticeable effect, then the gem is likely to be a genuine ruby.4 Rub the ruby against a clean white porcelain tile. If it's real, the ruby will leave no color or streak behind. It may even scratch the tile. If the stone leaves a colored mark on the tile, it is likely to be another type of substance. The absence of a streak isn't definitive confirmation that the ruby is genuine, but the presence of color does confirm that it isn't real.
C, C++, Java, Ruby and Scratch.
No, rubies are too hard to leave a streak. They just scratch the plate.
A real ruby will scratch just about any mineral except diamond. If it scratches quartz and isn't scratched itself in the process, that's a good (but not definitive) sign.
You can only identify if a ruby is real through appropriate equipment or/and under a microscope. With reference to what a real ruby looks like, under a microscope, you will be able to identify imperfections, the color is a very vivid red and they are scratch proof.
You can only identify if a ruby is real through appropriate equipment or/and under a microscope. With reference to what a real ruby looks like, under a microscope, you will be able to identify imperfections, the color is a very vivid red and they are scratch proof.
Scratch and scrimp
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You can only identify if a ruby is real through appropriate equipment or/and under a microscope. With reference to what a real ruby looks like, under a microscope, you will be able to identify imperfections, the color is a very vivid red and they are scratch proof.
It only shows which gemstone is harder than another one. Although a Diamond, at 10, will scratch a ruby or sapphire, at 9, Diamonds are 4x the hardness of rubies and sapphires.