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Cushion|Lab Grown|GIA

6.21ct E IF Cushion Lab Grown Diamond

ID • E/IF • GIA 6512136040

Certificate GIA 6512136040

Diamond specifications and retailer prices

From €21,352 EUR
$23,855 USD
As of October 29, 2026
Save €25,885 EUR (55%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €47,238 EUR at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

About this 6.21ct lab-grown cushion diamond

This 6.21ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512136040. Listed at 6 retailers as of October 29, 2026, with prices from €21,352 to €47,238, a €25,885 spread on the same certified stone. Cape Diamonds lists it at €47,238. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

6.21
Carat
E
Color
IF
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6512136040
Dimensions10.45 × 10.36 × 6.93 mm
L/W Ratio1.01
Top View
10.45 mm10.36 mm6.21 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512136040
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 66.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €47,238 EUR|Low: €15,251 EUR|High: €56,400 EUR|Avg: €36,911 EUR|-6.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 4€21,352 EUR
Retailer 3€23,997 EUR
Retailer 5€34,962 EUR
Retailer 7€36,533 EUR
Retailer 2€36,796 EUR
Cape Diamonds€47,238 EUR
Retailer 6€56,400 EUR

17 data points across 7 retailers

6 retailers€21,352 EUR to €47,238 EUR

B+
Cheapest Retailer
-
€21,352 EUR
$23,855 USD
Final sale: no returns
B+
Retailer 2
-
€23,997 EUR
$26,810 USD
View
B
Retailer 3
-
€34,962 EUR
£30,756 GBP
View
B+
Retailer 4
-
€36,796 EUR
£32,369 GBP
View
Most Expensive
B
Cape Diamonds
cert_6512136040 · Oct 29
€47,238 EUR
ZAR 852,575 ZAR
View
4 more retailers have this diamond
Prices start from €21,352 EURSave up to €25,885 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
6.21ct Cushion
€21,352 EUR