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?
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.
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!
You can find them mostly by fraudulent sellers on Internet Auctions, online seller shops and stores.
Certification: Detect real from fake / false diamond certificates - switched diamonds
HRD, Diamond High Council, GIA and IGI from Antwerp World Diamond Center,
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
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.
HP HT Pocessed diamonds:
You may buy a HP HT 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
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!
Read all about electronic testing Instrumens for polished + rough / uncut diamonds and Gold explained and tested.
Warning about bad shopping experience!
Some general advice:
Like any major diamond city NY, Dubai and Antwerp also has its 'tourist trap' and mass jewelry stores, also open on weekend.
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 a tourist:
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: firstname.lastname@example.org