Diamonds are formed deep within the Earth, typically more than 100 miles below the surface in the upper mantle (the Earth's mantle goes to a depth of about 1800 miles, or the distance from Minneapolis to Miami!). In the mantle, the combination of intense pressure and high temperatures form what are called diamond crystals. Diamonds are actually comprised of 99.95% pure carbon atoms.

Through volcanic eruptions below the surface of the earth's crust, these pressure-formed diamond crystals emerge closer to the surface, where they can be mined. Diamonds can be found anywhere in the world – under rock formations and even under the seabed! But because real diamonds are formed in such unique conditions, they are not easy to mine, and certain qualities are considered rare and very valuable.

When a diamond is unearthed, it hardly looks like the shiny stone you see on most jewelry. After it's mined, it's sent to a diamond cutter, an expert at cutting a stone to give it the best possible look. Stones can be cut manually with polishing wheels, or with sophisticated laser-guided cutting machines that analyze the clarities within the larger stone and cut precisely to extract the high-clarity cross-sections. Any "waste" from this process is often ground down and used for commercial purposes, such as high-grade drill bits.

After millions of years of formation, mining, cutting and polishing, a stone is now ready for its final destination! The diamond's size and shape will determine how it is set in a piece of jewelry.

How do we measure a diamond's true value and rarity? Read more about today's diamond market here.

You might not be convinced that you want to buy a diamond ring – and that's totally understandable. A diamond is certainly not a requirement for a happy marriage, and you may be considering your options, from skipping rings altogether to opting for a different type of stone. Let's explore some of the common doubts and misconceptions that come up during ring shopping.

Myth: Only a diamond can profess true love.

Fact: True love is expressed in any way you and your significant other would appreciate. When it comes to proposing or marriage, what counts most is a sign of dedication or commitment. This may be symbolized with a traditional diamond or in a completely different way – but authenticity is important if you do decide to go with a diamond ring.

Myth: The biggest diamond is the best diamond.

Fact: The best diamond is the one you can't stop staring at and want to show off to everyone (this does not have to be linked to a high price tag).

Myth: A diamond engagement ring should cost at least two months' salary.

Fact: A ring should cost what fits your personal budget – but that doesn't mean you have to compromise on its look. Learn more about how to find affordable and practical options, and how My Trio Rings is leading this new charge.

The average cost of an engagement ring and two wedding bands in 2015: $7,593.00 The starting cost of a diamond and gold trio ring set at My Trio Rings: $499.99

Myth: There are strict rules about what makes a "good" diamond.

Fact: Beauty is in the eye of the beholder. So much of diamond selection is based on what you like and what you'll be proud to wear.

Myth: You'll get a "fake" when you buy a diamond ring

Fact: The jewelry industry is tightly regulated by the United States Federal Trade Commission. Reputable jewelers, both online and in store, will offer guarantees and certificates of authenticity The right diamond for you comes down to your personal preferences and priorities. We'll help you figure out what's most important to you, and how to get what you want for an affordable price.