Radiant|Lab Grown|IGI

1.21ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG570363543

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

Certificate IGI LG570363543

Diamond specifications and retailer prices

From $159 USD
As of October 30, 2026
Save $877 USD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,036 USD at Flawless Fine Jewelry · As of October 31, 2026
View at Flawless Fine Jewelry

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 LG570363543 or 570363543. Listed at 18 retailers as of October 30, 2026, with prices from $159 to $1,036, a $877 spread on the same certified stone. Flawless Fine Jewelry lists it at $1,036. 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 angle47.7°
Pavilion angle31.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570363543
Dimensions7.06 × 5.25 × 3.60 mm
L/W Ratio1.34
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
7.06 mm5.25 mm1.21 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570363543
Side View
Table 65.5%Crown 47.7°Girdle: MediumPavilion 31.3°Culet: NoneDepth 68.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,036 USD|Low: $125 USD|High: $1,067 USD|Avg: $428 USD|-2.9%
Flawless Fine Jewelry
Retailer 2
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Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 17
November 1, 2026
Retailer 14$159 USD
Retailer 4$185 USD
Retailer 8$185 USD
Retailer 6$197 USD
Retailer 15$197 USD
Retailer 9$230 USD
Retailer 11$334 USD
Retailer 2$341 USD
Retailer 3$357 USD
Retailer 16$397 USD
Retailer 5$428 USD
Retailer 7$448 USD
Retailer 12$481 USD
Retailer 17$635 USD
Retailer 13$670 USD
Retailer 10$923 USD
Flawless Fine Jewelry$1,036 USD

28 data points across 17 retailers

18 retailers$159 USD to $1,036 USD

A
Cheapest Retailer
-
$159 USD
A
Retailer 2
-
$185 USD
View
Final sale: no returns
A
Retailer 3
-
$185 USD
View
Retailer 4
-
$197 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$197 USD
View
A
Retailer 6
-
$230 USD
HK$1,800 HKD
View
A
Retailer 7
-
$334 USD
€318 EUR
View
A
Retailer 8
-
$341 USD
ZAR 5,506 ZAR
View
B+
Retailer 9
-
$357 USD
View
Retailer 10
-
$397 USD
£313 GBP
View
Price last confirmed 28 days ago
A
Retailer 11
-
$428 USD
View
A
Retailer 12
-
$448 USD
View
A
Retailer 13
-
$481 USD
A$740 AUD
View
B+
Retailer 14
-
$523 USD
£412 GBP
View
B+
Retailer 15
-
$635 USD
View
B
Retailer 16
-
$670 USD
View
B
Retailer 17
-
$923 USD
£727 GBP
View
Most Expensive
B
Flawless Fine Jewelry
867B905EA · Oct 31
$1,036 USD
£816 GBP
View
17 more retailers have this diamond
Prices start from $159 USDSave up to $877 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.

A
1.21ct Radiant
$159 USD