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Round|Lab Grown|IGI

1.21ct H VS1 Round Lab Grown Diamond

EX • H/VS1 • IGI LG754510328

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754510328

Diamond specifications and retailer prices

From €144 EUR
$161 USD
As of October 26, 2026
Save €695 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €839 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round 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 LG754510328 or 754510328. Listed at 14 retailers as of October 26, 2026, with prices from €144 to €839, a €695 spread on the same certified stone. MOH London lists it at €839. 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
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754510328
Dimensions6.79 × 6.75 × 4.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.79 mm6.75 mm1.21 ctH / VS1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG754510328
Side View
Table 59.0%Crown 36.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.1%

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 26
Current: €839 EUR|Low: €144 EUR|High: €848 EUR|Avg: €474 EUR
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
Retailer 15
October 26, 2026
Retailer 8€144 EUR
Retailer 13€169 EUR
Retailer 3€181 EUR
Retailer 11€181 EUR
Retailer 14€306 EUR
Retailer 10€324 EUR
Retailer 12€336 EUR
Retailer 6€357 EUR
Retailer 2€403 EUR
Retailer 5€546 EUR
Retailer 4€583 EUR
Retailer 15€615 EUR
Retailer 9€625 EUR
Retailer 7€798 EUR
MOH London€839 EUR

26 data points across 15 retailers

14 retailers€144 EUR to €839 EUR

A
Cheapest Retailer
-
€144 EUR
$161 USD
Retailer 2
-
€169 EUR
$189 USD
View
Price last confirmed 8 days ago
Retailer 3
-
€181 EUR
$202 USD
View
Price last confirmed 9 days ago
Retailer 4
-
€181 EUR
$202 USD
View
Price last confirmed 7 days ago
Retailer 5
-
€306 EUR
ZAR 5,527 ZAR
View
Price last confirmed 9 days ago
Retailer 6
-
€324 EUR
$362 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
€336 EUR
View
B+
Retailer 8
-
€357 EUR
$399 USD
View
B+
Retailer 9
-
€403 EUR
$450 USD
View
B
Retailer 10
-
€546 EUR
$610 USD
View
Retailer 11
-
€583 EUR
$651 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
€615 EUR
$687 USD
View
B
Retailer 13
-
€625 EUR
$698 USD
View
Most Expensive
B
MOH London
LG754510328 · Oct 26
€839 EUR
£738 GBP
View
13 more retailers have this diamond
Prices start from €144 EURSave up to €695 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 Round
€144 EUR