no they are not the same type of mineral.
Ruby is a variety of the mineral corundum, and is not classified as sedimentary, igneous, or metamorphic in the manner of rocks.
Diamond is a form of carbon mineral that is classified as a type of metamorphic rock called Kimberlite. Diamond crystals are often found embedded within Kimberlite rock formations deep within the Earth's crust.
The Hope Diamond is a type of blue diamond, which is a variation of the mineral diamond. Diamonds are formed deep within the Earth's mantle under high pressure and temperature conditions.
Daimond is not a metamorphic rock because it is a mineral.
You can review the chart, below, to determine the specific gravity of diamond versus other gemstones, including several different types of rubies. From the chart you can deduce that depending on the type of ruby, it may or may not be exactly comparable to diamond.
MINERAL
Ruby is a precious gemstone composed of aluminum oxide and chromium that gives it a distinctive red color. It is a type of corundum mineral, with hardness second only to diamond. Rubies are highly valued for their beauty and rarity.
diamond
No, Ruby is not a type of crystal like quartz or amethyst. Ruby is a precious gemstone made of red corundum, a mineral form of aluminum oxide. It is prized for its deep red color and often used in jewelry.
Ruby is a variety of the mineral corundum, and is not classified as sedimentary, igneous, or metamorphic in the manner of rocks.
Diamond is a form of carbon mineral that is classified as a type of metamorphic rock called Kimberlite. Diamond crystals are often found embedded within Kimberlite rock formations deep within the Earth's crust.
A synthetic diamond is a mineral made of carbon, and possesses all the same properties as a mined diamond. It has a cubic crystalline structure, a refractive index of 2.42, dispersion of 0.044, mohs hardness of 10 and a density of 3.52.
diamond
The Hope Diamond is a type of blue diamond, which is a variation of the mineral diamond. Diamonds are formed deep within the Earth's mantle under high pressure and temperature conditions.
diamond
A diamond is a type of mineral composed of carbon atoms arranged in a crystal lattice structure. It is not classified as a rock itself, but rather as a mineral found within certain types of rocks, such as kimberlite or lamproite.
Diamond is a gem, but not the only gemstone. Rubies, emeralds, sapphires and other stones can also be considered gemstones. The word gem can also be used to describe other nouns, such as a person: "She's a gem."