What are Man-made diamonds

Find out the difference between fake, imitations, simulants, Moissanite, CZ, zircons, white sapphire, cultured, treated, synthetic, crystals, coated, glass, DLC coated CZ + other fake stones from a real, original diamond. 
The two most common simulates are Cubic Zircon and Moissanite.
Avoid fake Diamond Certificates | Detect HPHT + synthetic diamonds | Conventional Diamond Testers: 
How reliable are they?

Doublette: the thin table surface only is diamond. The rest is simulant! 

Each mineral and synthetic stone has a specific weight. Polished / rough diamonds do too! Don’t confuse size and weight!
Know the specific weight of polished and rough, uncut diamonds. They are distinct from simulants, moissanite, CZ, zircons, cultured, synthetic and other fake stones from real diamonds. View Specific Gravity

Example: A CZ Zircon weights about 1.31 Carats or about 55% more than a diamond for the same size.
A Moissanite of 6.5 mm (One carat size) round brilliant, weights approximately 0.87 carats.
Compare the stone to a real diamond: Use a carat or gram scale.

Put a line on a piece paper. Place the stone upside down over the line. If the stone shows any sign through the line, 
it is fake. Be aware that it is too difficult to recognize the line at smaller diamonds!

If the diamond is mounted, place it upside down on a piece of paper. If you can read through the print or even see smudges, then it is probably not a diamond. You should not be able to see the bottom, looking directly from the top Diamonds have a high refractive index. 

Bring the stone to your mouth, exhale to create steam. If the stone stays "foggy" for more than 3 seconds, 
it is probably a simulation.

If the stone shows abraded facet lines, magnified by 10, it is not a diamond. Take a piece of sandpaper the stone. 
If it is damaged it is a fake! "Scratch tests" on glass, metal, stones. 
Diamonds will cut and scratch everything. Fake will not. diamonds are the hardest material that exist! 

Fake, imitations of rough, uncut diamonds are generally crystals coated with diamond powder by nano technology. 
Fake rough and polished will be scattered on cutting wheel. They are also easily identifiable in a diamond lab by professionals

Clarity and  Inclusions:
Inclusions in diamonds help in determining that it is a real diamond. Internal and external flaws are a fingerprint, 
no two diamonds have the exact the same characteristics.
Fractor filled diamonds with silicone!
A diamond can be laser drilled to eliminate black spots, inclusion, out of your diamond and filled up with silicone. The professional name is "fractor filled" After certain time the silicone get away and the laser drilled wholes in your diamond 
will fill up now with dust, black spots.

"Cheap Diamonds": 50% off the price of a diamond doesn't exist! If the comparative price seems too good 
to be true, it probably is! Quality factors influencing prices
You can find them mostly by fraudulent sellers on Internet Auctions, online seller shops and stores.
View our average International wholesale prices

Certification: Detect real from fake / false diamond certificates - switched diamonds
HRD, Diamond High Council, GIA and IGI from Antwerp World Diamond Center, 
delivers always genuine certificates with sealed diamond in a transparent secured case. 
GIA do deliver diamonds loose in a parcel paper; easy to switch the diamond!

How to detect fake, false certificates: Verify if the Diamond Certificate is the original.
How to avoid fake or false Diamond Certificates:

HRD Antwerp-Diamond Lab, GIA and IGI have a new diamond certificate that features enhanced 
security measures, a refined cut grade and is able to be retrieved and downloaded online. 
The HRD Antwerp Certificate Link allows all HRD Antwerp diamond certificates, 
diamond-identification reports and diamond-color certificates issued after Jan. 1, 2005, 
to be retrieved online, 24 hours a day, seven days a week. 
To access the certificate link, visit HRD Certificate Link: www.hrdantwerplink.be
IGI gives the same Online Data Retrieval
Check and track real diamond certificate online: 
GIA Report: Check and track real diamond certificate online: www.gia.edu/reportcheck
Be aware for confusing genuine GIA certificates and others isued by independant professional GIA gemologists.

Secure sealed diamonds to avoid switched diamond: 
HRD, GIA and IGI do seal the certified diamond in a transparent secured case to avoid switched diamonds!.
When the seal is broken the text "broken seal" will be visible on the backside of the secured case! 
That do not mean that the diamond is a fake but that you do not have any guaranty about the 
quality of the diamond or eventualy a fake in the broken secured case. View image of broken seal:

Laser inscribed diamonds
Laser inscribed diamonds showing the name of the Diamond Laboratorie
such as HRD, IGI, GIA and the number of the certificate is most safely! 
The difference between a natural and treated, HPHT and synthetic diamonds
is only detectable by Diamond labs.

HPHT Pocessed diamonds: 
You may buy a HPHT treated diamond to improve it's color and clarity at the correct price. 
You can only know if a diamond is HP HT processed by inscription on the diamond certificate 
from HRD, GIA and IGI and laser inscribed on the girdle.  HP HT treated diamonds

 Never buy in Black to avoid taxes! Ask for a Buyback guarantee:
Ask for a real written buyback guarantee on offical invoice only!  
Never buy in black to avoid taxes! This kind of shops who will propose you buying in black have only one real intention: Cheat you! It are always scammers... like gold watch sellers in the street hahaha

Buy at reliable Diamond Companies at the source with a respectable 

Important notice!
Outsiders and non-professional diamantaires please be wise and resist the temptation of purchasing a rough diamond. 
It requires many years of experience to valuate the stone. And an expensive Sarin equipment to estimate the yield from rough. Too many ignorant buyers have bought nice pieces of glass!

Diamond Testers: How reliable are they? 
Read all about electronic testing Instrumens for polished + rough / uncut diamonds and Gold explained and tested.

Man-made, Synthetic, Gem Lab grown Replica: it's all the same. 
They are not comparable to natural untreated diamonds. Be aware! Read gem lab certificates, under comments.
It will be indicated as Synthetic, Gem Lab grown. Value 60% off the price of natural diamonds and 
you NEVER will be able to resell. You are better off to share your money and to buy a zircon at US $ 10 !

Warning about bad shopping experience!
Some general advice:
Like any major diamond city New York, London, Dubai, Sidney and Antwerp also has its 'tourist trap' and mass jewelry stores, also open on weekend. 
Read more about here:
47th Street Retailers Hit by Lawsuits by Rob Bates | August 2, 2016
In the last few months, New York Diamond District jewelers have been accused of not disclosing treatments and selling fake grading reports.

Comments: I have seen a lot lot more such cases by web retailers. I can produce plenty of such cases with proof. I do not think any of my customers that bought from web retailers ever saw any money back. etienne@etienneperret.com 

Avoid buying in the streets around the Central Sation, the Appelmansstraat, Vestingstraat, Keyserlei and Pelikaanstraat; 
so you'd better make sure you visit only official Antwerp Diamond Exchange (bourse) registered diamantairs, if in doubt ask for a their registration-member number.

To smart people think they can buy cheapest in the street at shops. "tourist trap"

Read this uncensored life bad shopping experience of this unteachable Japanese tourist who did know-it-all better than professionals :
I visited to your town last May and bought a diamond at a shop. 
The shop's name was the 'Royalty Jewellery & Diamond' and was just in front of the central station.

The price was 500 EUR but the shop cut the VISA card at the price of 5,000 EUR!
The shop cheated me. Scam!
After that, the diamond was revealed as a fake
I asked to exam the stone at my company's test labo,
The 'VISA company' didn't help me any more although the act was exact.
I guess that all the diamond shops are doing like that acts in all around the town accompany with VISA company, so, I are going to open this in 'Twitter' and 'Facebook' from now on again and again and I are going to appeal it persistently.
Are you ok for you? 'All the diamond shops are dealing the fake diamonds usually... 
Don't buy a diamond in shops. Diamond is a fake' 
I believe that my note will affect your town's bad reputation.
The shop's name was the 'Royalty Jewellery & Diamond' and was just in front of the Antwerpen central station. 

Although I have been contacting with them for a long time, they don't reply me yet.
I reported a report to your police station via the government sightseeing station, but the police station asked me to visit the office by myself again. I don't have money to visit to your town again at present. I just inquire you that like this bad behavior are done usually in your town?
How can we chaeck a diamond if a real one or not at the shop? Please discuss this fact with your town's diamond shops' committee.
The cc adress is the shop's opened e-mail one, but I have not been replied from them yet via this address. Their web site's information was also fake.... The tel number only is exact at present. +32(0)3-203 00 44 Very bad clarks will go on the phone. Tsuneo Maruyama, Japan  Email: t-maruya@mx2.nisiq.net
Opened seal to switch diamond image
Avoid fake diamond certificates - detect fake, false, imitations and simulantions. 
Selling counterfeit, imitation diamonds is fraudulent and illegal!
We recommend performing several easy tests, for free, without a traditional diamond tester, to detect the difference 
between fake and real polished, rough diamonds. When buying a diamond, most people do not have diamond testers.  
fake diamond certificate
Detect fake diamonds by price
Detect fake diamonds by trnasparency
genuine diamond certificates
Laser inscription on diamonds image
Diamond report image
Detect fake diamonds by specific weight
Weight image
Tranparency image
Detect fake diamonds by clarity
Fake diamond certificate image
switched diamonds - broken seal image of secured case of diamond certificate
Steam image
Hardness image
laser inscription on diamonds image
 clarity image
 price | image
Open seal shown
HPHT treatment image
HPHT Treatment machine | image
How to tell if your diamond is real or fake? 
Detect synthetic, man-made, imitation, replica, spot fake. 

Identify fraud in polished and rough. 

Distinc real, original diamonds from false, simulants, moissanite, counterfeit, 
CZ, zircons, cultured, treated, crystal, 

glass and dirty tricks. 

Example of bad experience life: we refused to receive a Japanese with an irrealistic budget of US $ 500 to buy a 1.00 Ct Triple Ex, D color, Loupe Clean (IF). 
Read about his bad shopping experience at the bottom of this page...

First rule to not be cheated!: NEVER buy a diamond set in a ring or jewelry!

You can NO MORE controll:

* fake or real diamonds 

* the weight,

* the quality of Cut, 

* the quality of proportions, 

* the quality of symmetry, 

* Hearts & Arrows Pattern,

* the girdle thickness, 

* the exact color, 

* the exact clarity, 

* Fluorescence,

* The laser inscription on the girdle of the diamond, if there is one, is no more lisible

* the certificate can be switched or fake.

Who can guarantee that the stone is the same as on an average (switched) certificate that is joined?

To be sure the diamond must be broke out of the jewelry to be certified loose by GIA, HRD or IGI. 
No other Laboratories are trustable!
 specific weight                transparency               hardness                                     clarity                            doublette
   price                                       steam                            certification                    fake certificates 
switched diamond in open seal             laser inscribed diamonds              HPHT treatment                         Trust
Test for free - Click on the images:
 Email     Tel: +32 3 233 29 90 
Antwerp World Diamond Center, Diamond Exchange, Hoveniersstraat 2, Antwerp / Belgium / Europe
discount 50%
This page was last updated on: February 3, 2017
​Copyright Ajediam All rights reserved
Doublette image
Understanding Your Needs