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Heart|Lab Grown|IGI

1.21ct E VS1 Heart Lab Grown Diamond

ID • E/VS1 • IGI LG831628400

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831628400

Diamond specifications and retailer prices

From €185 EUR
$207 USD
As of October 30, 2026
Save €781 EUR (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €966 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831628400 or 831628400. Listed at 18 retailers as of October 29, 2026, with prices from €185 to €966, a €781 spread on the same certified stone. MOH London lists it at €966. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831628400
Dimensions7.09 × 7.34 × 4.05 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.09 mm7.34 mm1.21 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831628400
Side View
Table 61.0%Crown 33.3°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 55.2%

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: €966 EUR|Low: €159 EUR|High: €972 EUR|Avg: €426 EUR|-0.6%
MOH London
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
October 31, 2026
Retailer 3€166 EUR
Retailer 4€206 EUR
Retailer 5€206 EUR
Retailer 13€259 EUR
Retailer 2€348 EUR
Retailer 8€353 EUR
Retailer 11€362 EUR
Retailer 7€372 EUR
Retailer 12€387 EUR
Retailer 6€493 EUR
Retailer 10€502 EUR
Retailer 9€646 EUR
Retailer 14€697 EUR
MOH London€966 EUR

38 data points across 14 retailers

18 retailers€185 EUR to €966 EUR

Retailer 1
-
€166 EUR
$185 USD
Price last confirmed 23 days ago
A
Retailer 2
-
€185 EUR
$207 USD
View
Final sale: no returns
Retailer 3
-
€192 EUR
$215 USD
View
Price last confirmed 33 days ago
Retailer 4
-
€206 EUR
$230 USD
View
Price last confirmed 28 days ago
Retailer 5
-
€206 EUR
$230 USD
View
Price last confirmed 20 days ago
Retailer 6
-
€259 EUR
£228 GBP
View
Price last confirmed 15 days ago
A
Retailer 7
-
€348 EUR
View
A
Retailer 8
-
€353 EUR
ZAR 6,368 ZAR
View
A
Retailer 9
-
€362 EUR
$404 USD
View
A
Retailer 10
-
€372 EUR
£327 GBP
View
A
Retailer 11
-
€387 EUR
$432 USD
View
B+
Retailer 12
-
€493 EUR
$551 USD
View
B+
Retailer 13
-
€502 EUR
A$862 AUD
View
B+
Retailer 14
-
€646 EUR
A$1,111 AUD
View
Retailer 15
-
€661 EUR
$738 USD
View
Price last confirmed 31 days ago
B
Retailer 16
-
€697 EUR
$779 USD
View
B
Retailer 17
-
€709 EUR
$792 USD
View
Most Expensive
B
MOH London
LG831628400 · Oct 29
€966 EUR
£850 GBP
View
17 more retailers have this diamond
Prices start from €185 EURSave up to €781 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 Heart
€185 EUR