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Cushion|Lab Grown|IGI

3.21ct F IF Cushion Lab Grown Diamond

ID • F/IF • IGI LG618430744

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG618430744

Diamond specifications and retailer prices

From €823 EUR
$923 USD
As of November 1, 2026
Save €5,781 EUR (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €6,604 EUR at Novita Diamonds · As of October 31, 2026
View at Novita Diamonds

About this 3.21ct lab-grown cushion diamond

This 3.21ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG618430744 or 618430744. Listed at 12 retailers as of October 31, 2026, with prices from €823 to €6,604, a €5,781 spread on the same certified stone. Novita Diamonds lists it at €6,604. 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

3.21
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618430744
Dimensions8.43 × 8.09 × 5.81 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.43 mm8.09 mm3.21 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618430744
Side View
Table 65.0%Crown 35.3°Girdle: MED-THKPavilion 40.7°Culet: NoneDepth 71.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €6,604 EUR|Low: €823 EUR|High: €8,818 EUR|Avg: €3,126 EUR|+0.4%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 4€823 EUR
Retailer 12€976 EUR
Retailer 6€984 EUR
Retailer 11€1,283 EUR
Retailer 2€1,414 EUR
Retailer 5€1,978 EUR
Retailer 8€2,277 EUR
Retailer 10€2,293 EUR
Retailer 3€3,348 EUR
Retailer 7€5,902 EUR
Retailer 9€6,072 EUR
Novita Diamonds€6,604 EUR

29 data points across 12 retailers

12 retailers€823 EUR to €6,604 EUR

A
Cheapest Retailer
-
€823 EUR
$923 USD
Final sale: no returns
A
Retailer 2
-
€976 EUR
$1,095 USD
View
A
Retailer 3
-
€984 EUR
$1,104 USD
View
A
Retailer 4
-
€1,283 EUR
$1,439 USD
View
A
Retailer 5
-
€1,414 EUR
View
A
Retailer 6
-
€1,978 EUR
A$3,413 AUD
View
A
Retailer 7
-
€2,277 EUR
$2,554 USD
View
A
Retailer 8
-
€2,293 EUR
$2,572 USD
View
B+
Retailer 9
-
€3,348 EUR
£2,957 GBP
View
B
Retailer 10
-
€5,902 EUR
$6,620 USD
View
B
Retailer 11
-
€6,072 EUR
$6,810 USD
View
Most Expensive
B
Novita Diamonds
cert_618430744 · Oct 31
€6,604 EUR
A$11,396 AUD
View
11 more retailers have this diamond
Prices start from €823 EURSave up to €5,781 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.

A
3.21ct Cushion
€823 EUR