Why are diamonds and rubies valuable? what are minerals like these called?

Usually the price of minerals depends on it's rarity and it's distinguishing characteristics. Diamonds are rare, and are also the hardest, and rubies are rare and come in various bright red - ish/purpule - ish/pinkish colours. These minerals are called gemstones.

→ The image below shows you a ruby and a diamond.

Hope it helped,

BioTeacher101

Why are diamonds and rubies valuable? What are minerals like these called?

Answer : The value of things depends on the ratio between demand and supply. The most valuable minerals are those that are very appreciated and scarce. Diamonds and rubies are examples: there are few and they have a great value because there is a great demand.

Answer : They are called gemstones.

Hope this helps!

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

measuring physical properties lab reportinstructions: in the physical properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in tiny world. record your observations and test measurements in the lab report below. youwill submit your completed report.name and title: lyric lawton, mr.herbert, 10/13/17, physical properties lab. objective(s): i need to parvus build his house out of the right material, so he will stay cool in the mountains.hypothesis: if we use wood to build the roof of the house, then the temperature inside the house will remain cooler.if we use clay brick to build the walls and floors of the house, then the temperature inside the house will remain cooler.if we use aluminium to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate.if we use iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure.