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 $800 USD
As of October 28, 2026
17 retailers carry this diamond
Most expensive: $1,175 USD 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 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
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

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $1,175 USD|Low: $202 USD|High: $1,182 USD|Avg: $599 USD|+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$202 USD
Retailer 12$250 USD
Retailer 5$413 USD
Retailer 8$423 USD
Retailer 13$433 USD
Retailer 6$458 USD
Retailer 11$525 USD
Retailer 7$612 USD
Retailer 9$643 USD
Retailer 2$800 USD
Retailer 4$857 USD
Retailer 3$901 USD
MOH London$1,175 USD

23 data points across 13 retailers

17 retailers

Retailer 1
-
$202 USD
Price last confirmed 8 days ago
Retailer 2
-
$234 USD
View
Price last confirmed 10 days ago
Retailer 3
-
$250 USD
View
Price last confirmed 9 days ago
Retailer 4
-
$250 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$413 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$423 USD
ZAR 6,827 ZAR
View
Price last confirmed 11 days ago
Retailer 7
-
$433 USD
View
Price last confirmed 9 days ago
Retailer 8
-
$458 USD
€436 EUR
View
Price last confirmed 7 days ago
Retailer 9
-
$525 USD
View
Price last confirmed 15 days ago
Retailer 10
-
$612 USD
A$941 AUD
View
Price last confirmed 10 days ago
Retailer 11
-
$643 USD
View
Price last confirmed 8 days ago
Retailer 12
-
$733 USD
View
Price last confirmed 48 days ago
B
Retailer 13
-
$800 USD
View
Retailer 14
-
$803 USD
View
Price last confirmed 10 days ago
Retailer 15
-
$857 USD
View
Price last confirmed 8 days ago
Retailer 16
-
$919 USD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG811647059 · Oct 21
$1,175 USD
£925 GBP
View
Price last confirmed 13 days ago
16 more retailers have this diamond
Prices start from $800 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
$800 USD