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 $610 USD
As of October 28, 2026
15 retailers carry this diamond
Most expensive: $937 USD 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 15 retailers as of October 28, 2026. 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

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $937 USD|Low: $161 USD|High: $947 USD|Avg: $529 USD
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$161 USD
Retailer 13$189 USD
Retailer 3$202 USD
Retailer 11$202 USD
Retailer 14$342 USD
Retailer 10$362 USD
Retailer 12$375 USD
Retailer 6$399 USD
Retailer 2$450 USD
Retailer 5$610 USD
Retailer 4$651 USD
Retailer 15$687 USD
Retailer 9$698 USD
Retailer 7$891 USD
MOH London$937 USD

26 data points across 15 retailers

15 retailers

Retailer 1
-
$161 USD
Price last confirmed 8 days ago
Retailer 2
-
$189 USD
View
Price last confirmed 10 days ago
Retailer 3
-
$202 USD
View
Price last confirmed 11 days ago
Retailer 4
-
$202 USD
View
Price last confirmed 9 days ago
Retailer 5
-
$342 USD
ZAR 5,527 ZAR
View
Price last confirmed 11 days ago
Retailer 6
-
$362 USD
View
Price last confirmed 9 days ago
Retailer 7
-
$375 USD
€357 EUR
View
Price last confirmed 7 days ago
Retailer 8
-
$399 USD
View
Price last confirmed 8 days ago
Retailer 9
-
$450 USD
View
Price last confirmed 8 days ago
Retailer 10
-
$510 USD
View
Price last confirmed 13 days ago
B
Retailer 11
-
$610 USD
View
Retailer 12
-
$651 USD
View
Price last confirmed 10 days ago
Retailer 13
-
$687 USD
View
Price last confirmed 8 days ago
Retailer 14
-
$698 USD
View
Price last confirmed 8 days ago
Most Expensive
MOH London
LG754510328 · Oct 26
$937 USD
£738 GBP
View
Price last confirmed 8 days ago
14 more retailers have this diamond
Prices start from $610 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.

B
1.21ct Round
$610 USD