no
No earth does not have the technology.
Sulfur
Diamonds don't melt.
Sulfur or sulphur turns a golden brown as the yellow powder starts to melt when heated. The longer the heating, the darker the bubbling sulfur or sulphur will become.
Diamonds do not melt, but they can burn. Diamonds are formed at extremely high pressure and temperatures, but will burn in the presence of oxygen, like an oxygen torch at 1472 degrees Fahrenheit.
Magnetism - the filing would be attracted to a magnet, the sulfur would not. You could also use melting point. Sulfur will melt at 115.21 °C, (239.38 °F) while iron won't melt until 1538 °C (​2800 °F). Of course once it melts you wouldn't have powdered sulfur any more - you'd have liquid sulfur.
Diamonds don't melt, so your question doesn't have an answer.
Iron, gold, silver, aluminum, sulfur, gypsum, diamonds, copper, and many more.
There are many minerals in the world and on other planets too (gold, diamonds, sulfur
You can melt a diamond at 3,820 degrees Kelvin or 6416.6 Fahrenheit, or 3,547 Celsius.
"Diamonds don't burn, unless you can find a heat source equal to 3820 degrees Kelvin (6416F, 3546C), then diamonds simply melt." -last person actually diamonds do burn at about 800*C