Radiant|Lab Grown|IGI

1.21ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG620456864

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

Certificate IGI LG620456864

Diamond specifications and retailer prices

From $231 USD
As of October 30, 2026
Save $1,059 USD (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,360 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG620456864 or 620456864. Listed at 19 retailers as of October 30, 2026, with a 458% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620456864
Dimensions7.56 × 5.22 × 3.50 mm
L/W Ratio1.45
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
7.56 mm5.22 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620456864
Side View
Table 66.0%Crown 46.1°Girdle: MediumPavilion 35.9°Culet: NoneDepth 67.0%

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 30
Current: $597 USD|Low: $221 USD|High: $1,280 USD|Avg: $564 USD|+3.7%
Retailer 1
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
November 1, 2026
Retailer 14$231 USD
Retailer 6$258 USD
Retailer 4$267 USD
Retailer 2$286 USD
Retailer 15$286 USD
Retailer 7$368 USD
Retailer 13$383 USD
Retailer 9$542 USD
Retailer 1$597 USD
Retailer 5$601 USD
Retailer 10$765 USD
Retailer 8$768 USD
Retailer 12$922 USD
Retailer 3$1,014 USD
Retailer 11$1,271 USD

43 data points across 15 retailers

19 retailers$231 USD to $1,290 USD

A
Cheapest Retailer
-
$231 USD
A
Retailer 2
-
$258 USD
View
Final sale: no returns
A
Retailer 3
-
$267 USD
View
Retailer 4
-
$286 USD
View
Price last confirmed 7 days ago
A
Retailer 5
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$286 USD
View
A
Retailer 6
-
$368 USD
View
A
Retailer 7
-
$383 USD
View
A
Retailer 8
-
$542 USD
ZAR 8,757 ZAR
View
B+
Retailer 9
-
$597 USD
£470 GBP
View
B+
Retailer 10
-
$601 USD
View
B+
Retailer 11
-
$765 USD
A$1,177 AUD
View
B+
Retailer 12
-
$768 USD
A$1,181 AUD
View
B
Retailer 13
-
$922 USD
View
B
Retailer 14
-
$1,014 USD
View
B
Retailer 15
-
$1,185 USD
View
Retailer 16
-
$1,271 USD
£1,001 GBP
View
Price last confirmed 11 days ago
B
Retailer 17
-
$1,290 USD
View
Retailer 18
-
$2,210 USD
View
Price under review
Most Expensive
Do Amore Diamonds
23-620456864 · Oct 31
$2,360 USD
View
Price under review
18 more retailers have this diamond
Prices start from $231 USDSave up to $1,059 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
$231 USD