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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 $513 SGD
$401 USD
As of October 29, 2026
Save $2,287 SGD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,800 SGD at Brilliant Earth · As of October 29, 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 29, 2026, with prices from $513 to $2,800, a $2,287 spread on the same certified stone. Brilliant Earth lists it at $2,800. 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: Oct 29
Current: $2,800 SGD|Low: $509 SGD|High: $2,800 SGD|Avg: $1,402 SGD
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
October 31, 2026
Retailer 8$513 SGD
Retailer 2$574 SGD
Retailer 15$575 SGD
Retailer 4$637 SGD
Retailer 18$637 SGD
Retailer 14$825 SGD
Retailer 5$1,007 SGD
Retailer 3$1,033 SGD
Retailer 12$1,042 SGD
Retailer 11$1,059 SGD
Retailer 17$1,395 SGD
Retailer 7$1,604 SGD
Retailer 9$2,045 SGD
Retailer 10$2,091 SGD
Retailer 16$2,339 SGD
Retailer 6$2,347 SGD
Retailer 13$2,499 SGD
Brilliant Earth$2,800 SGD

42 data points across 18 retailers

21 retailers$513 SGD to $2,800 SGD

Retailer 1
-
$509 SGD
$398 USD
Price last confirmed 40 days ago
A
Retailer 2
-
$513 SGD
$401 USD
View
A
Retailer 3
-
$574 SGD
$449 USD
View
Final sale: no returns
A
Retailer 4
-
$575 SGD
$450 USD
View
Retailer 5
-
$623 SGD
$487 USD
View
Price last confirmed 40 days ago
A
Retailer 6
-
$637 SGD
$498 USD
View
A
Retailer 7
-
$637 SGD
$498 USD
View
A
Retailer 8
-
$825 SGD
$645 USD
View
B+
Retailer 9
-
$1,007 SGD
$788 USD
View
A
Retailer 10
-
$1,033 SGD
$808 USD
View
A
Retailer 11
-
$1,042 SGD
£642 GBP
View
A
Retailer 12
-
$1,059 SGD
€789 EUR
View
B+
Retailer 13
-
$1,395 SGD
$1,091 USD
View
B
Retailer 14
-
$1,604 SGD
$1,255 USD
View
Retailer 15
-
$2,026 SGD
$1,585 USD
View
Price last confirmed 40 days ago
B
Retailer 16
-
$2,045 SGD
$1,600 USD
View
B
Retailer 17
-
$2,091 SGD
$1,636 USD
View
Retailer 18
-
$2,339 SGD
$1,830 USD
View
Price last confirmed 13 days ago
B
Retailer 19
-
$2,347 SGD
$1,836 USD
View
B
Retailer 20
-
$2,499 SGD
£1,539 GBP
View
Most Expensive
B
Brilliant Earth
14276809A · Oct 29
$2,800 SGD
$2,190 USD
View
20 more retailers have this diamond
Prices start from $513 SGDSave up to $2,287 SGD

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
$513 SGD