CZ blog from CubicZirconia.com- The Clear Choice, online since 1999

Diamond Downgrade program gives you Cash For Your Diamond and a perfect CZ Replica replacement for your cherished jewelry 0

Journalists have known for decades what anyone who tries to do so finds out pretty quickly: it’s hard to sell a diamond for anywhere close to what you paid for it. But if you need cash and fast...what’s to do?

Enter CubicZirconia.com's "Diamond Downgrade" program, which allows you to keep your jewelry, just sell the diamond for fast cash at a fair price, have it replaced with our 5A/AAAAA cubic zirconia...and be assured that no one will ever know the difference.

The 4C's of Cubic Zirconia 0

Diamonds are universally measured against the “4C’s standard”: Cut, Color, Clarity and Carat Weight. All these characteristics can also be found in top-quality cubic zirconia stones, such as those manufactured for use in our CubicZirconia.com finished jewelry and sold through our website.

In this blog post, let’s discuss how these two stones compare. The more perfect the diamond, the harder a jeweler has to work to determine if it's really a diamond...or one of our cubic zirconia stones! Let's see how...

Custom Shape / Custom Size Cubic Zirconia Stones (Custom Cutting Available) 0

Yes, we can custom cut cubic zirconia stones for you in practically any shape or size you want. It will take a bit more time and cost more than a popular shape and size combination such as those we always have in stock ready to ship within 48 hours...but it is possible. Check out this blog post for details and instructions to purchase this custom stone cutting service. Buy one or wholesale lots in bulk with volume discount.

Cubic Zirconia size chart by Carat Weight 4

Measuring Cubic Zirconia Loose Stones: CZ size comparison to diamonds

When people refer to the size of a diamond, they’re not actually talking about the size dimensions of the stone. The size of a diamond is measured in its weight. The word "carat" comes from the "carob" seed, the original unit of measure for diamond traders. Carat is the unit of mass for gemstones and is used as a way to compare one stone to another (Note: Carat weight is unrelated to the similar sounding karat, which refers to gold's purity).

Whether you're shopping for finished jewelry set with CZ or loose cubic zirconia stones, it's important to know how these stones are actually measured.

When comparing diamonds and Cubic Zirconia, you first must understand that the weight of a diamond is different from the weight of a CZ because of differences in density. In fact, Cubic Zirconia are 1.7 times denser than a diamond. Since the carat weight of a gemstone is a function of its weight, the dimensions of a 1 carat real-weight diamond will not be the same as the dimensions of a 1 carat real-weight Cubic Zirconia. If using real-weight measures, a Cubic Zirconia stone that matched the weight of a 1 carat diamond would be smaller, more dense, and heavier.

So how does a 1 carat diamond compare to a Cubic Zirconia stone? To account for the weight difference and to make life a little easier, Cubic Zirconia are measured in millimeters which references the same dimensions as a diamond carat equivalent. We take the dimensions of an absolutely perfect diamond, measure its height and width, and voila – that’s the dimensions we use for an equivalent Cubic Zirconia. For example, a perfect Round Cut one-carat diamond is comparable to a 6.5 mm Round Cut Cubic Zirconia. In other words, a 1 carat Round Cut Cubic Zirconia diamond equivalent is 6.5 mm.

When you’re shopping for jewelry on CubicZirconia.com, know that we use carat-equivalent sizes. That means that when you buy a 2 carat Cubic Zirconia pendant, we match up the size dimensions for a perfect 2 carat diamond and make sure you get a match in size: that would be an 8.00 mm CZ stone, or a two-carat diamond equivalent.