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cubic zirconia 

Cubic zirconia (sometimes called simply 'cz') is the most popular diamond simulant in the world today. It is an oxide of the metallic element zirconium, ZrO². It has a hardness of about 8.5 on the Mohs hardness scale, as opposed to diamond, which is 10, sapphire/ruby which is 9, topaz which is 8, and so on. The refractive index of CZ is 2.42. It can be made in nearly any color and can be faceted into many cuts.

CZ occurs naturally but in pieces too small for jewelry purposes. It wasn't until the 1970s however when Soviet scientists learned how to grow this mineral in the laboratory, at which time jewelry designers first took notice of cubic zirconia. For the first few years it was on the market it was often sold for as much as $20 per carat (!!) and was only available in a few colors.

CZ is more dense than diamond -- it weighs more for its size than diamond does. Sapphire and ruby, both of which are the same gemstone, just different colors, are also more dense than diamond. CZ is about 75% heavier than diamond. As such, a CZ's size is referred to in carats usually in comparison to diamonds. CZs are more accurately measured in millimeters, referring to the width of the stone. A 6.5 mm cubic zirconia is equal in size to a one-carat diamond and actually weighs about 1.75 carats.

CZ isn't grown/created like any other imitation gemstone in the world, either. A high radio-frequency "skull crucible" system is used, in which the melting zirconia powder actually creates the sides of its own container during its formation. Cooling this extremely hot molten ore becomes the most crucial step in the entire process. A carefully programmed cooling procedure is required to form the flawless crystals -- metal pipes in a coil-shape with water running through them are used to cool down the material, in the center.
CZ is often spoken of negatively because it is a synthetic gemstone. It is durable, very bright, can be grown in a varity of colors and when well cut it is a very convincing diamond substitute.

See related:
diamond
gold
platinum
bling
bling bling
jewelry
cubic zirconia by Ryan Thompson September 25, 2004

Zipcoding 

When you're in a long-distance relationship, but want to fuck other people. So you only date when you're in the same zip code
Yo when I go to college, I want to experience life. So my current girl and I are gonna be zipcoding.
Zipcoding by wamemes October 4, 2019

cubic zirconia 

Girlfriend: You know - diamonds are a girls best friend.
Boyfriend: yeah? Not a guys. That diamond burned a hole in my wallet. I think I'll stick with dogs and cubic zirconia.
cubic zirconia by Jbomb11 March 21, 2009

Pubic Zirconia 

When pubic hair is cut to resemble a diamond shape. A pun on "cubic zirconia" and it's similarity to a diamond.
Barry: I banged a filthy hooker last night, but it was awesome.
Samuel: Well what were her pubes like? Runway strip, Full "George" Bush, or smooth?
Barry: None of the above. She was rocking the ever popular pubic zirconia!

cubic zirconia 

A diamond-like synthetic stone. It is a bad idea to buy an engagement ring with one of these without informing your significant other. Such an action is considered acceptable grounds for divorice.
Mirna left him standing at the alter because she learned her "diamond" ring was actually cubic zirconia.
cubic zirconia by Theonegirl August 25, 2007

Pubic Zirconia 

A stray hair which at first seems to be a pubic hair, but is actually not.
I was shocked to find the sink covered in hair, luckily it was just Pubic Zirconia.
Pubic Zirconia by SchmidtUltra December 28, 2007
More from Urban Dictionary

Surf Dracula Syndrome 

A phenomenon in film/television series, most notably streaming series, where the main premise is drawn out to such a point that it takes an entire season or more to get the parts of the series the audience is actually interested in seeing.

For example, if a series is titled "Surf Dracula," a majority of viewers would tune in expecting to see Dracula surfing by the first or second episode. However, the entire first season would instead be tedious padding and backstory before finally ending with Dracula surfing in the last five minutes of the season finale.
I watched "Smallville" on Netflix the other day. Dude, it was ten seasons of filler before he finally flew! Major Surf Dracula Syndrome!
Word of the Day on October 24, 2026

Northstarring

Finding your way back to the truth by fixing on one verified fact and working out from there, the way you navigate by the North Star when everything around you is spinning.
Rumours were flying everywhere, so she went northstarring — one checked fact at a time.
Northstarring by Light Bearer October 22, 2026
Word of the Day on October 23, 2026

Plate of Brown 

A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
Wanna go to meal hall & grab a plate of brown?
Plate of Brown by Cheddar Craigson September 18, 2020
Word of the Day on October 22, 2026

Larpenomics

When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
Andrew Tate has mastered the field of larpenomics
Larpenomics by Rbois09 October 21, 2026
Word of the Day on October 21, 2026

Palmela Handerson 

Your hand that you masturbate with.
Girlfriend: What are you going to do for the next week while I'm on holiday?

Boyfriend: Have a visit from Palmela Handerson of course!
Word of the Day on October 20, 2026
Basically the same meaning as ate.
x:"Girl your fit chewed today!"
Chewed by iod1o March 30, 2022
Word of the Day on October 19, 2026
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