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Radiant|Lab Grown|IGI

1.21ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG510196409

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

Certificate IGI LG510196409

Diamond specifications and retailer prices

From $250 USD
As of November 4, 2026
Save $2,150 USD (90%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,400 USD at Do Amore Diamonds · As of November 4, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG510196409 or 510196409. Listed at 20 retailers as of November 4, 2026, with prices from $250 to $2,400, a $2,150 spread on the same certified stone. Do Amore Diamonds lists it at $2,400. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510196409
Dimensions7.97 × 5.25 × 3.46 mm
L/W Ratio1.52
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
7.97 mm5.25 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510196409
Side View
Table 65.0%Crown 42.5°Girdle: Slightly ThickPavilion 37°Culet: NoneDepth 65.9%

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: $2,400 USD|Low: $240 USD|High: $2,400 USD|Avg: $790 USD
Do Amore Diamonds
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
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Retailer 17
Retailer 18
November 4, 2026
Retailer 18$250 USD
Retailer 5$279 USD
Retailer 16$290 USD
Retailer 3$310 USD
Retailer 17$310 USD
Retailer 10$365 USD
Retailer 2$427 USD
Retailer 7$519 USD
Retailer 8$547 USD
Retailer 11$575 USD
Retailer 12$589 USD
Retailer 15$952 USD
Retailer 4$1,090 USD
Retailer 6$1,100 USD
Retailer 9$1,325 USD
Retailer 13$1,370 USD
Retailer 14$1,501 USD
Do Amore Diamonds$2,400 USD

38 data points across 18 retailers

20 retailers$250 USD to $2,400 USD

A
Cheapest Retailer
-
$250 USD
A
Retailer 2
-
$279 USD
View
Final sale: no returns
A
Retailer 3
-
$290 USD
View
Retailer 4
-
$310 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$310 USD
View
A
Retailer 6
-
$365 USD
View
A
Retailer 7
-
$427 USD
View
A
Retailer 8
-
$519 USD
View
B+
Retailer 9
-
$547 USD
View
B+
Retailer 10
-
$575 USD
View
B+
Retailer 11
-
$589 USD
View
B
Retailer 12
-
$870 USD
View
B
Retailer 13
-
$952 USD
View
B
Retailer 14
-
$1,090 USD
View
B
Retailer 15
-
$1,100 USD
View
B
Retailer 16
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$1,266 USD
View
B
Retailer 17
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$1,325 USD
View
B
Retailer 18
-
$1,370 USD
View
B
Retailer 19
-
$1,501 USD
View
Most Expensive
B
Do Amore Diamonds
27-A16030B2B · Nov 4
$2,400 USD
View
19 more retailers have this diamond
Prices start from $250 USDSave up to $2,150 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
$250 USD