Round|Lab Grown|IGI

1.21ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG811647059

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811647059

Diamond specifications and retailer prices

From €181 EUR
$202 USD
As of October 26, 2026
Save €642 EUR (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,052 EUR at MOH London · As of October 21, 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 LG811647059 or 811647059. Listed at 17 retailers as of October 26, 2026, with a 355% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle33.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811647059
Dimensions6.90 × 6.83 × 4.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.90 mm6.83 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811647059
Side View
Table 56.0%Crown 33.7°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.4%

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: Oct 26
Current: €1,052 EUR|Low: €181 EUR|High: €1,058 EUR|Avg: €536 EUR|+0.5%
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
October 28, 2026
Retailer 10€181 EUR
Retailer 12€224 EUR
Retailer 5€370 EUR
Retailer 8€378 EUR
Retailer 13€388 EUR
Retailer 6€410 EUR
Retailer 11€470 EUR
Retailer 7€547 EUR
Retailer 9€576 EUR
Retailer 2€716 EUR
Retailer 4€767 EUR
Retailer 3€806 EUR
MOH London€1,052 EUR

23 data points across 13 retailers

17 retailers€181 EUR to €823 EUR

A
Cheapest Retailer
-
€181 EUR
$202 USD
Retailer 2
-
€209 EUR
$234 USD
View
Price last confirmed 8 days ago
Retailer 3
-
€224 EUR
$250 USD
View
Price last confirmed 7 days ago
Retailer 4
-
€224 EUR
$250 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
€370 EUR
$413 USD
View
Retailer 6
-
€378 EUR
ZAR 6,827 ZAR
View
Price last confirmed 9 days ago
Retailer 7
-
€388 EUR
$433 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
€410 EUR
View
Retailer 9
-
€470 EUR
$525 USD
View
Price last confirmed 13 days ago
Retailer 10
-
€547 EUR
A$941 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
€576 EUR
$643 USD
View
Retailer 12
-
€656 EUR
$733 USD
View
Price last confirmed 46 days ago
B
Retailer 13
-
€716 EUR
$800 USD
View
Retailer 14
-
€719 EUR
$803 USD
View
Price last confirmed 8 days ago
B
Retailer 15
-
€767 EUR
$857 USD
View
B
Retailer 16
-
€823 EUR
$919 USD
View
Most Expensive
MOH London
LG811647059 · Oct 21
€1,052 EUR
£925 GBP
View
Price last confirmed 11 days ago
16 more retailers have this diamond
Prices start from €181 EURSave up to €642 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
€181 EUR