Today I wanted to figure out what “t.w. diamond” actually means. I’ve seen this term a bunch of times on jewelry descriptions and I was always kinda confused. So, I did what any normal person would do – I started digging.

First, I just did some basic searches to get the general idea. Turns out, “t.w.” stands for “Total Weight”. This means the combined weight of all the diamonds in a piece of jewelry. Not just the big one in the middle, but all of them added up.
Then I went a little deeper. Why does this “Total Diamond Weight” or TDW even matter? Well, it helps you understand the value and how the jewelry will look. Knowing the total weight gives you a better picture of what you’re actually getting.
Some More Details
- I also found out that carat is about weight, not size. Makes sense, but I never really thought about it that way.
- There’s this thing called CTTW – Carat Total Weight. Basically, the same as TDW.
- One carat is equal to 0.2 grams, and they weigh diamonds to the hundredth of a carat. So, a 1/10-carat diamond is like 0.10 carats.
Here’s Where It Gets Interesting
I stumbled upon this term “Top Wesselton”. Apparently, it’s a grade for really white diamonds, ranking high on some fancy scale called the GIA scale. These diamonds are super white and usually found in rivers, not mines. And “VS”? That means “Almost flawless”. Who knew?
So, after all this digging, I finally get it. When you see “t.w.” on a piece of jewelry, it’s telling you the total weight of all the diamonds. This is important for figuring out the value and design. Knowing these terms like TDW, CTTW, and even the Top Wesselton thing helps both buyers and sellers. It’s like a secret language of the jewelry world!
To be honest, at first it felt like a lot, but after looking into it more it made sense. It’s not just about one big stone, but all of the little ones too! I’m glad I finally took the time to learn all this. Now, when I see “t.w. diamond”, I’ll actually know what it means!

This was just my little adventure for today. Hope you found it helpful, or at least a little bit interesting!