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Round|Lab Grown|IGI

3.21ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG654411372

Shape and cutting style on the report: Round brilliant

Certificate IGI LG654411372

Diamond specifications and retailer prices

From €359 EUR
$401 USD
As of November 1, 2026
Save €1,601 EUR (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €1,960 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.21ct lab-grown round diamond

This 3.21ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG654411372 or 654411372. Listed at 21 retailers as of October 31, 2026, with prices from €359 to €1,960, a €1,601 spread on the same certified stone. Brilliant Earth lists it at €1,960. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.21
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654411372
Dimensions9.44 × 9.49 × 5.81 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.44 mm9.49 mm3.21 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654411372
Side View
Table 58.0%Crown 35.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €1,960 EUR|Low: €356 EUR|High: €1,960 EUR|Avg: €983 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 8€359 EUR
Retailer 12€402 EUR
Retailer 15€403 EUR
Retailer 4€446 EUR
Retailer 18€446 EUR
Retailer 14€577 EUR
Retailer 5€705 EUR
Retailer 3€723 EUR
Retailer 11€730 EUR
Retailer 13€742 EUR
Retailer 17€977 EUR
Retailer 7€1,123 EUR
Retailer 9€1,432 EUR
Retailer 10€1,464 EUR
Retailer 16€1,638 EUR
Retailer 6€1,644 EUR
Retailer 2€1,740 EUR
Brilliant Earth€1,960 EUR

42 data points across 18 retailers

21 retailers€359 EUR to €1,960 EUR

Retailer 1
-
€356 EUR
$398 USD
Price last confirmed 40 days ago
A
Retailer 2
-
€359 EUR
$401 USD
View
A
Retailer 3
-
€402 EUR
$449 USD
View
Final sale: no returns
A
Retailer 4
-
€403 EUR
$450 USD
View
Retailer 5
-
€436 EUR
$487 USD
View
Price last confirmed 40 days ago
A
Retailer 6
-
€446 EUR
$498 USD
View
Retailer 7
-
€446 EUR
$498 USD
View
Price last confirmed 7 days ago
A
Retailer 8
-
€577 EUR
$645 USD
View
B+
Retailer 9
-
€705 EUR
$788 USD
View
A
Retailer 10
-
€723 EUR
$808 USD
View
A
Retailer 11
-
€730 EUR
£642 GBP
View
A
Retailer 12
-
€742 EUR
View
B+
Retailer 13
-
€977 EUR
$1,091 USD
View
B
Retailer 14
-
€1,123 EUR
$1,255 USD
View
Retailer 15
-
€1,419 EUR
$1,585 USD
View
Price last confirmed 41 days ago
B
Retailer 16
-
€1,432 EUR
$1,600 USD
View
B
Retailer 17
-
€1,464 EUR
$1,636 USD
View
B
Retailer 18
-
€1,638 EUR
$1,830 USD
View
B
Retailer 19
-
€1,644 EUR
$1,836 USD
View
B
Retailer 20
-
€1,740 EUR
£1,531 GBP
View
Most Expensive
B
Brilliant Earth
14276809A · Oct 31
€1,960 EUR
$2,190 USD
View
20 more retailers have this diamond
Prices start from €359 EURSave up to €1,601 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 Round
€359 EUR