Radiant|Lab Grown|IGI

1.21ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG579399792

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

Certificate IGI LG579399792

Diamond specifications and retailer prices

From $570 USD
£449 GBP
As of October 31, 2026
13 retailers carry this diamond
Most expensive: $1,148 USD at MOH London · As of October 15, 2026
View at MOH London

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 LG579399792 or 579399792. Listed at 13 retailers as of October 31, 2026. 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
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579399792
Dimensions7.71 × 5.19 × 3.55 mm
L/W Ratio1.49
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
7.71 mm5.19 mm1.21 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579399792
Side View
Table 65.0%Crown 41°Girdle: MED-STKPavilion 35.5°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $1,148 USD|Low: $197 USD|High: $1,690 USD|Avg: $638 USD|+0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 15, 2026
Retailer 11$197 USD
Retailer 6$297 USD
Retailer 2$301 USD
Retailer 3$338 USD
Retailer 5$414 USD
Retailer 4$434 USD
Retailer 10$585 USD
Retailer 8$676 USD
Retailer 9$954 USD
MOH London$1,148 USD
Retailer 7$1,330 USD

25 data points across 11 retailers

13 retailers

Retailer 1
-
$177 USD
Price last confirmed 21 days ago
Retailer 2
-
$206 USD
View
Price last confirmed 19 days ago
Retailer 3
-
$220 USD
View
Price last confirmed 21 days ago
Retailer 4
-
$220 USD
View
Price last confirmed 22 days ago
Retailer 5
-
$297 USD
View
Price last confirmed 19 days ago
Retailer 6
-
$301 USD
£237 GBP
View
Price last confirmed 19 days ago
Retailer 7
-
$414 USD
ZAR 6,689 ZAR
View
Price last confirmed 19 days ago
Retailer 8
-
$434 USD
£342 GBP
View
Price last confirmed 19 days ago
B+
Retailer 9
-
$570 USD
£449 GBP
View
Retailer 10
-
$676 USD
View
Price last confirmed 18 days ago
Retailer 11
-
$781 USD
View
Price last confirmed 22 days ago
Retailer 12
-
$954 USD
View
Price last confirmed 18 days ago
Most Expensive
MOH London
LG579399792 · Oct 15
$1,148 USD
£904 GBP
View
Price last confirmed 18 days ago
12 more retailers have this diamond
Prices start from $570 USD

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.

B+
1.21ct Radiant
$570 USD