The cheapest diamonds are lab-grown diamonds, which offer identical quality to natural diamonds but cost significantly less (often 70-90% cheaper). For natural diamonds, the cheapest options are small carat sizes (under 1 carat) with lower clarity/color grades (like J-K color, SI clarity), and for the absolute lowest price, industrial-grade "bort" (dust) or tiny faceted melee diamonds exist, though they are often brown/yellow and very small.
Princess
Not only are princess-cut diamonds one of the most popular fancy diamond shapes, but they are also one of the most affordable. Princess-cut diamonds are so affordable because less raw diamond needs to be removed during the cutting process to make this shape.
A 1-carat diamond in Australia generally costs between A$2,000 and A$20,000+, but can range from under $1,100 for lower-grade stones to over $18,000 for high-quality, well-cut diamonds, with the price heavily influenced by the "4 Cs": Cut, Colour, Clarity, and Carat, plus the diamond's shape and if it's natural or lab-grown (lab-grown being much cheaper). For example, you might find a lower-clarity, M-color oval for around $1,000, while a D-color, VVS1 princess cut could be over $11,000.
Diamond weight isn't measured by gram, rather by carat, which is 0.2 of a gram. 1 carat diamond costs somewhere between $4.5k to $7k for recommended grades (Ideal cut, H or G Color, SI1 or VS2 Clarity). A diamond that weights 1 gram worth as low as $35k, or as high as $282k.
Moissanite is the most affordable diamond alternative for those who are looking for a diamond-like appearance and don't want to lose out on radiance. Because moissanite has a higher refractive index than a diamond, it will exhibit a fierier, rainbow brilliance at a lower cost.
The Aquamarine name comes from the Latin word for seawater and is said to calm waves and keep sailors safe at sea. It is sometimes referred to as a poor man's diamond because of the pale color.
For a $5,000 budget, you can typically get a natural diamond engagement ring with a center stone around 0.75 to 1.0 carat, possibly slightly larger (up to 1.2 ct) in elongated shapes like pear or oval, depending on cut, color, clarity, and the setting's cost, with lab-grown options allowing for much larger (3-4+ carat) stones or alternatives like moissanite offering bigger stones within budget.
Yes, lab-grown diamonds are real diamonds, possessing the exact same chemical composition (pure carbon), physical properties, and optical characteristics as natural diamonds, just with a different origin story. The only real difference is that one is grown in a laboratory by mimicking Earth's conditions (HPHT or CVD), while the other is mined from the ground, making lab diamonds a more affordable and sustainable choice, though they often have lower resale value.
The Moussaieff Red Diamond
Weighing 5.11 carats, this is the largest known red diamond, making it exceptionally rare. Red is the rarest color classification for diamonds, and stones of this size and purity are virtually unheard of.
A 1-carat diamond's price varies wildly, from around $1,000 to over $20,000, depending heavily on the "Four Cs" (Cut, Color, Clarity) and shape, with high-quality, colorless natural diamonds at the top end and lab-grown or lower-grade natural diamonds significantly cheaper. Round brilliant cuts generally cost more than fancy shapes like princess or cushion, and lab-grown diamonds offer substantial savings over natural stones, sometimes by a factor of ten or more for similar specs.
How much cheaper is a lab grown diamond? Lab diamonds are typically 60% to 85% cheaper than natural diamonds. This is because the process of creating a lab diamond is more efficient and cost effective than the process to mine a diamond.
Ten years ago, in 2003, a 2.00-carat Fancy Intense Yellow diamond with a VS+ clarity grade cost $5,000 per carat. Today, that same stones goes for $13,500 per carat.
You can buy a large authentic center diamond for under $500, but it is likely to have very low cut, color and clarity grades. This means the stone will not reflect light well, may have some inclusions and a gray or yellow tint. A larger, lower cost diamond may also be less durable.
UV Light Test
Placing a diamond under UV light and watching the reaction can sometimes be a good indicator of whether a diamond is real or not. Most diamonds emit a blue-colored glow under UV light, but not all of them. So if your diamond does, you can feel pretty confident that it is a real diamond.
Near-colorless diamonds are normally more affordable than colorless diamonds. As they are typically difficult to distinguish without an expert eye, G, H, I, and J-color diamonds make for a stunning and often more affordable option in comparison with colorless diamonds.
I3 diamond clarity represents the lowest grade of diamond clarity available.
Because diamonds reflect white light, colorless diamonds produce the best sparkle and fire. In fact, the more color a diamond has, the less likely it is to reflect white light. And as a result, will produce less sparkle. A D-color diamond is the highest quality, and will offer the greatest sparkle.
It is currently owned by Moussaieff Jewellers Ltd. The Moussaieff Red was displayed in 2003 as part of the Smithsonian Institution's "The Splendor of Diamonds" exhibit, alongside The De Beers Millennium Star and The Heart of Eternity.
No, a jeweler generally cannot tell if a diamond is lab-grown just by looking at it with the naked eye; they need specialized, lab-grade equipment like GIA iD100 or X-ray luminescence (XRL) testers to detect subtle differences in growth patterns, impurities, or fluorescence, as lab-grown diamonds share the same chemical and optical properties as natural diamonds. While some jewelers have machines to test, professional grading labs (like GIA) use advanced methods to identify them, often relying on laser inscriptions and grading reports for confirmation.
While Tiffany & Co. primarily focuses on natural, ethically sourced diamonds and has historically emphasized them, their parent company LVMH is testing lab-grown diamonds in other luxury brands, creating speculation, but Tiffany's official stance highlights their commitment to natural diamonds, sourced from known mines, with some jewelers offering "Tiffany-style" settings for lab-grown stones.
No, lab grown diamonds do not lose their sparkle over time. They have the same chemical composition as natural diamonds, which means they maintain their brilliance as long as they are properly cared for and kept clean.
Michelle Obama has two engagement rings: her original was a 1-carat round diamond, but in 2017, she received an upgrade to a larger, estimated 2.5 to 3-carat princess or cushion-cut diamond in a pave setting, with reports suggesting the new one is worth significantly more.
According to most diamond experts, anything over 2 carats is considered significantly big. So yes, 3-carat diamonds fit into the category of 'huge' diamonds.