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Radiant|Lab Grown|IGI

1.21ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG512237789

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

Certificate IGI LG512237789

Diamond specifications and retailer prices

From $213 USD
As of November 1, 2026
Save $1,617 USD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,830 USD at Do Amore Diamonds · As of November 2, 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 LG512237789 or 512237789. Listed at 19 retailers as of November 1, 2026, with prices from $213 to $1,830, a $1,617 spread on the same certified stone. Do Amore Diamonds lists it at $1,830. 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 angle38.5°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512237789
Dimensions7.90 × 5.18 × 3.55 mm
L/W Ratio1.53
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
7.90 mm5.18 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512237789
Side View
Table 65.5%Crown 38.5°Girdle: MediumPavilion 37°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,830 USD|Low: $183 USD|High: $1,910 USD|Avg: $702 USD|+15.8%
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
November 2, 2026
Retailer 15$213 USD
Retailer 5$247 USD
Retailer 14$319 USD
Retailer 10$327 USD
Retailer 13$352 USD
Retailer 8$451 USD
Retailer 2$586 USD
Retailer 11$638 USD
Retailer 6$742 USD
Retailer 4$876 USD
Retailer 9$1,012 USD
Retailer 12$1,049 USD
Retailer 7$1,082 USD
Retailer 3$1,087 USD
Do Amore Diamonds$1,830 USD

34 data points across 15 retailers

19 retailers$213 USD to $1,830 USD

Retailer 1
-
$164 USD
Price last confirmed 14 days ago
Retailer 2
-
$191 USD
View
Price last confirmed 20 days ago
Retailer 3
-
$204 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
$213 USD
View
Final sale: no returns
Retailer 5
-
$247 USD
View
Price last confirmed 14 days ago
B+
Retailer 6
-
$319 USD
View
A
Retailer 7
-
$327 USD
£258 GBP
View
A
Retailer 8
-
$352 USD
View
A
Retailer 9
-
$451 USD
ZAR 7,286 ZAR
View
B+
Retailer 10
-
$586 USD
View
B+
Retailer 11
-
$638 USD
A$982 AUD
View
B+
Retailer 12
-
$673 USD
CA$935 CAD
View
B+
Retailer 13
-
$742 USD
View
Retailer 14
-
$876 USD
View
Price last confirmed 14 days ago
B
Retailer 15
-
$1,012 USD
View
B
Retailer 16
-
$1,049 USD
£826 GBP
View
Retailer 17
-
$1,082 USD
View
Price last confirmed 15 days ago
B
Retailer 18
-
$1,087 USD
SGD 1,469 SGD
View
Most Expensive
B
Do Amore Diamonds
27-93AD91D01 · Nov 2
$1,830 USD
View
18 more retailers have this diamond
Prices start from $213 USDSave up to $1,617 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
$213 USD