Price of Diamonds

Where the world comes to find
out about diamonds

Price of Diamonds Home
Price of Diamonds
Diamond Listings
Diamond Buying Checklist
Diamond Glossary
Other Gemstones

Diamond Prices Lists and Charts
GIA and IGI Diamond Prices
Diamond Price List
Diamond Charts
Weight Categories
Carat Weight & Size Charts
Calibration Charts
Proportions of Diamonds

Appraising Diamonds
American Gem Society
European Gemological Laboratory
Gemological Institute of America
Diamond Certification Laboratory of Australia
Diamond Appraisal
Diamond Appraisers
ATGA Codes
Laboratory List
Diamond Testing
Diamond Broker
Appraisal abbreviations

Diamond Basic Information
Diamond Facts
Diamond Ring Tension Setting
DeBeers Diamonds
Diamond Formation
The 4 C's of Diamonds
Buy Diamonds
Diamond Clarity
Diamond Color
Diamond Cut
Diamond Weight
Diamond Flaws
Harmonized System Codes

Additional Information
How to Buy Loose Diamonds
Diamond Selling
Diamonds in Canada
Diamonds - How to Clean
Da Vinci Diamond Cut
Diamond Fakes
Diamond Archives
How to Sell Your Diamond
Famous Diamonds
Diamond Formation
Diamond Properties
Diamond Cutting
Diamond Substitutes

Price of Diamonds Expert Author Alerts
Sign up to receive email alerts of new articles from Price of Diamonds on!

Email Address:

This site is monitored by

stumble upon

Certified Diamonds at Auctions

Certified Diamonds AuctionsBuying certified diamonds at auctions means it is quite likely almost all the diamonds will be in setting and mostly will be antique diamond jewelery.

This is fall well and good and much antique jewelery can fetch a tidy sum.

However there are some points about buying certified diamonds at auctions to be aware off.

The cuts of early diamonds, by today’s standards, were not so good or precise and sometimes you can get a stone that does not have the sparkle or brilliance that a well cut stone of today will have.

Old stones tend to be worth more mounted than loose as the entire antiqueness of the piece is worth more than the diamond itself.

Old diamonds were cut by hand and not by machinery, so the precision is not there. This means there is a wider variation in the cuts and therefore a wider variation in the price. One needs to take great care when picking antique diamond jewelry. A large poorly cut antique diamond of the same weight of a modern well cut diamond can be worth up to 50 percent less so it is important to understand something about diamond cuts and the proportions that give the best sparkle and brilliance.

For example, the girdle (that outer rim of a diamond), tends to be cut thinner on antique diamonds which makes them more fragile and easily chipped. Modern diamond cuts will have a thicker girdle although too thick and it adds too much weight to the diamond reducing its sparkle and giving a poorer light refraction.

Modern certified diamonds can be bought at auction and these will tend to be lose stones and should always be accompanied by a certificate. The stones and certificate should always be inspected prior to the auction taking place.

If you are going to an auction at, say Sotheby’s, then you can be sure that any diamonds on offer there will be of excellent quality and will usually fetch a substantial price.

Buying certified diamonds at online auctions is potentially dangerous as you have no way of comparing the stones with the certificates. Only if there is a very clear cut returns policy whereby you do not lose any money is it worth considering the idea of purchasing a stone by online auction, certified or not.

If you can attend certified diamonds auctions in person, this is always the way to go to ensure you can see and possibly bid on a certified diamond.


Who Are We | Disclaimer | Feedback | Link to Our Site | Diamond Links | Terms

Copyright © 2006-2020 ALL RIGHTS RESERVED. Technical Author Services Pty Ltd. ACN. 126 773 126. ABN 62 122 488 508 A private limited company incorporated in Victoria, Australia.
Webmaster: Technical Author Services Pty Ltd