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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 $711 NZD
$401 USD
As of November 1, 2026
Save $3,174 NZD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,886 NZD 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 $711 to $3,886, a $3,174 spread on the same certified stone. Brilliant Earth lists it at $3,886. 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

How it works →
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: $3,886 NZD|Low: $706 NZD|High: $3,886 NZD|Avg: $1,948 NZD
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$711 NZD
Retailer 12$797 NZD
Retailer 15$798 NZD
Retailer 4$884 NZD
Retailer 18$884 NZD
Retailer 14$1,144 NZD
Retailer 5$1,398 NZD
Retailer 3$1,434 NZD
Retailer 11$1,446 NZD
Retailer 13$1,470 NZD
Retailer 17$1,936 NZD
Retailer 7$2,227 NZD
Retailer 9$2,839 NZD
Retailer 10$2,902 NZD
Retailer 16$3,247 NZD
Retailer 6$3,258 NZD
Retailer 2$3,450 NZD
Brilliant Earth$3,886 NZD

42 data points across 18 retailers

21 retailers$711 NZD to $3,886 NZD

Retailer 1
-
$706 NZD
$398 USD
Price last confirmed 40 days ago
A
Retailer 2
-
$711 NZD
$401 USD
View
A
Retailer 3
-
$797 NZD
$449 USD
View
Final sale: no returns
A
Retailer 4
-
$798 NZD
$450 USD
View
Retailer 5
-
$864 NZD
$487 USD
View
Price last confirmed 40 days ago
A
Retailer 6
-
$884 NZD
$498 USD
View
Retailer 7
-
$884 NZD
$498 USD
View
Price last confirmed 7 days ago
A
Retailer 8
-
$1,144 NZD
$645 USD
View
B+
Retailer 9
-
$1,398 NZD
$788 USD
View
A
Retailer 10
-
$1,434 NZD
$808 USD
View
A
Retailer 11
-
$1,446 NZD
£642 GBP
View
A
Retailer 12
-
$1,470 NZD
€789 EUR
View
B+
Retailer 13
-
$1,936 NZD
$1,091 USD
View
B
Retailer 14
-
$2,227 NZD
$1,255 USD
View
Retailer 15
-
$2,812 NZD
$1,585 USD
View
Price last confirmed 41 days ago
B
Retailer 16
-
$2,839 NZD
$1,600 USD
View
B
Retailer 17
-
$2,902 NZD
$1,636 USD
View
Retailer 18
-
$3,247 NZD
$1,830 USD
View
Price last confirmed 14 days ago
B
Retailer 19
-
$3,258 NZD
$1,836 USD
View
B
Retailer 20
-
$3,450 NZD
£1,531 GBP
View
Most Expensive
B
Brilliant Earth
14276809A · Oct 31
$3,886 NZD
$2,190 USD
View
20 more retailers have this diamond
Prices start from $711 NZDSave up to $3,174 NZD

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
$711 NZD