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Radiant|Lab Grown|IGI

1.21ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG539225586

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG539225586

Diamond specifications and retailer prices

From $334 AUD
As of November 4, 2026
Save $1,306 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,639 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG539225586 or 539225586. Listed at 16 retailers as of November 4, 2026, with prices from $334 to $1,639, a $1,306 spread on the same certified stone. Brilliant Earth lists it at $1,639. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539225586
Dimensions7.40 × 5.49 × 3.63 mm
L/W Ratio1.35
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.40 mm5.49 mm1.21 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG539225586
Side View
Table 64.5%Crown 37.2°Girdle: MediumPavilion 35.6°Culet: NoneDepth 66.1%

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 4
Current: $1,639 AUD|Low: $334 AUD|High: $1,682 AUD|Avg: $915 AUD|-2.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 11$334 AUD
Retailer 9$371 AUD
Retailer 6$639 AUD
Retailer 8$639 AUD
Retailer 2$677 AUD
Retailer 10$824 AUD
Retailer 5$905 AUD
Retailer 7$1,195 AUD
Retailer 3$1,455 AUD
Retailer 4$1,480 AUD
Brilliant Earth$1,639 AUD

41 data points across 11 retailers

16 retailers$334 AUD to $1,639 AUD

Retailer 1
-
$287 AUD
Price last confirmed 34 days ago
A
Retailer 2
-
$334 AUD
View
Final sale: no returns
Retailer 3
-
$346 AUD
View
Price last confirmed 39 days ago
Retailer 4
-
$371 AUD
View
Price last confirmed 33 days ago
A
Retailer 5
-
$636 AUD
View
A
Retailer 6
-
$639 AUD
View
A
Retailer 7
-
$639 AUD
View
A
Retailer 8
-
$677 AUD
View
B+
Retailer 9
-
$824 AUD
View
B+
Retailer 10
-
$905 AUD
View
B+
Retailer 11
-
$954 AUD
View
Retailer 12
-
$1,190 AUD
View
Price last confirmed 36 days ago
B
Retailer 13
-
$1,195 AUD
View
B
Retailer 14
-
$1,266 AUD
View
B
Retailer 15
-
$1,480 AUD
View
Most Expensive
B
Brilliant Earth
6168464A · Nov 4
$1,639 AUD
$1,150 USD
View
15 more retailers have this diamond
Prices start from $334 AUDSave up to $1,306 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
1.21ct Radiant
$334 AUD