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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 $571 AUD
$401 USD
As of October 29, 2026
Save $2,547 AUD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,118 AUD 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 29, 2026, with prices from $571 to $3,118, a $2,547 spread on the same certified stone. Brilliant Earth lists it at $3,118. 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: Oct 29
Current: $3,118 AUD|Low: $567 AUD|High: $3,118 AUD|Avg: $1,561 AUD
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$571 AUD
Retailer 11$639 AUD
Retailer 15$641 AUD
Retailer 4$709 AUD
Retailer 18$709 AUD
Retailer 14$918 AUD
Retailer 5$1,122 AUD
Retailer 3$1,150 AUD
Retailer 2$1,160 AUD
Retailer 12$1,179 AUD
Retailer 17$1,553 AUD
Retailer 7$1,787 AUD
Retailer 9$2,278 AUD
Retailer 10$2,328 AUD
Retailer 16$2,605 AUD
Retailer 6$2,614 AUD
Retailer 13$2,782 AUD
Brilliant Earth$3,118 AUD

43 data points across 18 retailers

21 retailers$571 AUD to $3,118 AUD

Retailer 1
-
$567 AUD
$398 USD
Price last confirmed 40 days ago
A
Retailer 2
-
$571 AUD
$401 USD
View
A
Retailer 3
-
$639 AUD
$449 USD
View
Final sale: no returns
A
Retailer 4
-
$641 AUD
$450 USD
View
Retailer 5
-
$693 AUD
$487 USD
View
Price last confirmed 40 days ago
A
Retailer 6
-
$709 AUD
$498 USD
View
A
Retailer 7
-
$709 AUD
$498 USD
View
A
Retailer 8
-
$918 AUD
$645 USD
View
B+
Retailer 9
-
$1,122 AUD
$788 USD
View
A
Retailer 10
-
$1,150 AUD
$808 USD
View
A
Retailer 11
-
$1,160 AUD
£642 GBP
View
A
Retailer 12
-
$1,179 AUD
€789 EUR
View
B+
Retailer 13
-
$1,553 AUD
$1,091 USD
View
B
Retailer 14
-
$1,787 AUD
$1,255 USD
View
Retailer 15
-
$2,256 AUD
$1,585 USD
View
Price last confirmed 41 days ago
B
Retailer 16
-
$2,278 AUD
$1,600 USD
View
B
Retailer 17
-
$2,328 AUD
$1,636 USD
View
Retailer 18
-
$2,605 AUD
$1,830 USD
View
Price last confirmed 13 days ago
B
Retailer 19
-
$2,614 AUD
$1,836 USD
View
B
Retailer 20
-
$2,782 AUD
£1,539 GBP
View
Most Expensive
B
Brilliant Earth
14276809A · Oct 31
$3,118 AUD
$2,190 USD
View
20 more retailers have this diamond
Prices start from $571 AUDSave up to $2,547 AUD

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
$571 AUD