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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 €191 EUR
$213 USD
As of November 1, 2026
Save €1,447 EUR (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €1,638 EUR 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 €191 to €1,638, a €1,447 spread on the same certified stone. Do Amore Diamonds lists it at €1,638. 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: €1,638 EUR|Low: €164 EUR|High: €1,710 EUR|Avg: €628 EUR|+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 14€191 EUR
Retailer 4€221 EUR
Retailer 13€286 EUR
Retailer 9€293 EUR
Retailer 12€315 EUR
Retailer 2€404 EUR
Retailer 5€519 EUR
Retailer 10€571 EUR
Retailer 6€664 EUR
Retailer 3€784 EUR
Retailer 8€906 EUR
Retailer 11€939 EUR
Retailer 7€969 EUR
Retailer 15€973 EUR
Do Amore Diamonds€1,638 EUR

35 data points across 15 retailers

19 retailers€191 EUR to €1,638 EUR

Retailer 1
-
€147 EUR
$164 USD
Price last confirmed 14 days ago
Retailer 2
-
€171 EUR
$191 USD
View
Price last confirmed 19 days ago
Retailer 3
-
€183 EUR
$204 USD
View
Price last confirmed 17 days ago
A
Retailer 4
-
€191 EUR
$213 USD
View
Final sale: no returns
Retailer 5
-
€221 EUR
$247 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
€286 EUR
$319 USD
View
A
Retailer 7
-
€293 EUR
£258 GBP
View
A
Retailer 8
-
€315 EUR
$352 USD
View
A
Retailer 9
-
€404 EUR
ZAR 7,286 ZAR
View
B+
Retailer 10
-
€519 EUR
$580 USD
View
B+
Retailer 11
-
€571 EUR
A$982 AUD
View
B+
Retailer 12
-
€603 EUR
CA$935 CAD
View
B+
Retailer 13
-
€664 EUR
$742 USD
View
Retailer 14
-
€784 EUR
$876 USD
View
Price last confirmed 13 days ago
B
Retailer 15
-
€906 EUR
$1,012 USD
View
B
Retailer 16
-
€939 EUR
£826 GBP
View
Retailer 17
-
€969 EUR
$1,082 USD
View
Price last confirmed 15 days ago
B
Retailer 18
-
€973 EUR
SGD 1,469 SGD
View
Most Expensive
B
Do Amore Diamonds
27-93AD91D01 · Nov 2
€1,638 EUR
$1,830 USD
View
18 more retailers have this diamond
Prices start from €191 EURSave up to €1,447 EUR

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
€191 EUR