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The World’s Most Expensive Diamonds – The Shocking Truth

world's most expensive diamonds

The World’s Most Expensive Diamonds – The Shocking Truth

by | Sep 19, 2016 | Uncategorized, Diamond Buyer, diamond buying and selling, Selling Diamonds

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You Won’t Believe The Staggering Cost Of Some Of The World’s Most Expensive Diamonds

What if you could own one of the world’s most costly diamonds?

Well, you can! That is if you have millions and millions of dollars. We are your local Austin diamond buyers and before we reveal the jaw-dropping figures, let’s first discuss what determines the cost of a diamond.

How To Examine A Diamond Like A Pro

First things first

There are 4 major factors to determine how much a diamond is worth, know as the 4C’s of diamond grading.

# 1 The Cut

Simply put, this refers to the shape of the diamond as well as the proportions, symmetry and polish.

# 2 Clarity

There are 11 Grades to determine your diamonds clarity. The fewer inclusions, or blemishes in a stone, the better the clarity grade.

# 3 Color

This refers to diamonds that lie within the color range, not “fancy” color diamonds that are blue or red. Actually, the less color, the more valuable the stone is.

# 4 Carat

As most people already know, this is a way to measure the size of a diamond.

You can learn more about the 4C’s from the Gemological Institute of America (GIA)


Now Onto The Fun Stuff

Breaking News!!

The 14.62 carat “Oppenheimer Blue” diamond just sold for a record-breaking $57.5 million, according to CNN Style. It was sold to a private collector and is the best quality and largest blue diamond ever sold at an auction.

In case you are wondering, blue diamonds make up about only .0001% of all of the world’s diamonds. This solves the mystery of why they are so expensive.

Some Other Ridiculously Expensive Diamonds

The Koh-I-Noor Diamond: Priceless

  • The name comes from the Persian phrase; “Mountain of Light”
  • It is 105 carats
  • Came from Golconda in the Andhra Pradesh state of India
  • It remains in the possession of the British Royal Family and is held at HM Tower of London

The Hope Diamond: $350 Million

  • 45.52 carats
  • Located at the Smithsonian Museum of Natural History in Washington DC

The price of rough diamonds is on the rise, and investors are getting in on the action. 

Crazy Expensive Diamonds Actually Owned By Real People

A Word Record

In 2010 a businessman from Hong Kong-based Chow Tai Fook Jewellery paid $35.3 million for the Cullinan Heritage diamond, weighing in at 507 carats. This is the highest price ever paid in the world for a rough diamond. This diamond is expected to sell for a staggering $25 Million.

The Price For “Flawless” Diamonds

Ever heard of Harry Winston?

Sold at Christie’s auction in Geneva for $26.7 million, was the “Winston Legacy” Diamond which is said to be a “flawless” 101.73 carats.

What About Us Regular People?

Don’t feel bad

The gems that we mentioned here along with most of the world’s most expensive diamonds are either on display in a museum or owned by private collectors. Even most celebrities rent their diamond jewelry for special events.

Bottom line

It’s fun to fantasize but the majority of us will just have to appreciate these diamonds from afar. Be sure to contact us if you are interested in selling your diamonds.  And don’t forget to check out more blog posts for fun stories and tips on selling diamonds! 

 

Highly recommend selling jewelry here! Moran was very personable and transparent in his explanation. He offered a very fair price for my gold snake ring. I would definitely go back if I ever have any jewelry I want to sell in the future.
Renna K.
6/30/2026
Moran is amazing! He was honest, and fair. He was also prompt with my appointment, spent time explaining things to me, and incredibly personable. I highly recommend!
Sheley F.
6/14/2026
I’ve worked in jewelry for ten years; so, I was skeptical to visit M.I. before meeting him in person, especially since I wasn’t in a rush to sell some belongings… It was an awesome experience!

Moran is extremely intelligent and factual. I appreciated his insight and sound advice. He and the company are very trustworthy based on facts, advice, guidance, and all information. Everyone needs to know about him! Amazing!

Thank you!
Julie W.
6/10/2026
After researching, reading reviews & visiting a few "seemingly" good jewelers, I made up my mind and I chose to do business with M.I. Trading. I felt they were above the others in every way.
Other jewelers made me feel like they were doing me a favor even looking at the jewelry which I wanted to sell. Some others low balled me.
I knew I found someone that I could trust when I went to M.I Trading. Moran did not rush me. He explained everything to me and was completely transparent, because he wanted me to make educated decisions. Nobody else even came close to caring about my business, never mind taking the time to educate me.
At M.I. Trading, I had the opportunity to think about what I wanted to do, without any pressure ... and when I decided what I wanted to sell, Moran gave me TOP DOLLAR.
I could not be happier that I found M.I. Trading, a company that I can trust.
Penny J.
6/02/2026
Selling jewelry? When you're dealing with something that you are not an expert in, you must trust the people you're dealing with. After visiting more than one person/company, regarding selling my old jewelry, I found and I TRUST
M.I. Trading. Some other places I visited turned their nose up at my beautiful jewelry and wouldn’t even give me a price! I am relieved & elated that I found M.I. Trading.
I not only liked Moran's personality, but his integrity, knowledge and customer appreciation was unsurpassed by any other person I visited/ spoke with.
Moran seeks to educate you BEFORE you, the customer, makes a decision! Moran seeks to treat his customers the way he would want to be treated . . . and he treated me like a VIP....
VERY important to me!
I am just a person selling my jewelry and I was treated like a return customer, like a friend, like I want to be treated ... AND ... I received TOP dollar for my jewelry.
My experience (s) at M.I. Trading could not have been better!
Penny
6/01/2026
The wife and I had some flatware to sell. We did some research and came up with a bottom price we would accept and a "wishful thinking" price we would really like. After checking reviews, we settled on M.I.Trading and mad an appointment. Upon arrival we met with Moran and he talked us through the process, how it was weighed and answered all of our questions. When it was said and done, Moran came up with a number that was just short of our "wishing" number. We shook hands, he handed us a check and had us on our way faster than I thought. We would highly recommend M. I. Trading.
James D.
6/01/2026
I recently decided to sell some sterling silver flatware and other items that were languishing in storage, not wanted by relatives.
I found M.I. Trading on line. Mr. Tairy responded to voicemail immediately and met me at his office the next day. He was helpful, professional, and forthright. He evaluated everything and made an immediate offer. I was sorry to see my pretty things go but left within the hour with a cheque for a substantial and fair price.
Erica C.
5/14/2026
I had some jewelry to sell, and M.I. Trading gave me a very fair offer. I was able to get a same day appointment which was a very convenient bonus. Moran was professional and polite and prompt at communicating. If I ever need this service again, I will absolutely return.
Alicia B.
5/12/2026
He was truly helpful during a time that I was overwhelmed by what was left for me by my mother. He was very straight forward about everything. Will be coming back for sure.
Katti R.
5/11/2026
I was so nervous and emotional , but I knew it was best to sale my rings. Moran Tairy Was so nice, explained the process and he was so compassionate about my feelings, making sure I was okay and saying positive motivation words. He understood was hard for me to sale my wedding bands but also made me feel here is to a new journey with my kids.

I recommend everyone to go to him. His industry is to buy but he makes you feel that your feelings and emotions are more important to him than making a sale and that shows he is a great person and you want to do business with people that have a heart. I’m thankful God put him in our path to sale the rings.
barbara m.
5/09/2026

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