Round|Lab Grown|IGI

1.21ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG811647073

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811647073

Diamond specifications and retailer prices

From $202 USD
As of November 3, 2026
Save $966 USD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,168 USD at MOH London · As of November 2, 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 LG811647073 or 811647073. Listed at 17 retailers as of November 2, 2026, with prices from $202 to $1,168, a $966 spread on the same certified stone. MOH London lists it at $1,168. 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°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811647073
Dimensions6.92 × 6.86 × 4.19 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
6.92 mm6.86 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811647073
Side View
Table 56.0%Crown 33°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.7%

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: Nov 3
Current: $1,168 USD|Low: $202 USD|High: $1,182 USD|Avg: $594 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
November 2, 2026
Retailer 10$202 USD
Retailer 12$250 USD
Retailer 4$413 USD
Retailer 8$432 USD
Retailer 13$433 USD
Retailer 7$459 USD
Retailer 9$525 USD
Retailer 11$600 USD
Retailer 2$610 USD
Retailer 6$650 USD
Retailer 5$857 USD
Retailer 3$901 USD
MOH London$1,168 USD

28 data points across 13 retailers

17 retailers$202 USD to $1,168 USD

A
Cheapest Retailer
-
$202 USD
A
Retailer 2
-
$234 USD
View
A
Retailer 3
-
$250 USD
View
Retailer 4
-
$250 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$413 USD
View
A
Retailer 6
-
$432 USD
ZAR 6,971 ZAR
View
A
Retailer 7
-
$433 USD
View
B+
Retailer 8
-
$459 USD
€437 EUR
View
B+
Retailer 9
-
$525 USD
View
B+
Retailer 10
-
$600 USD
View
B+
Retailer 11
-
$610 USD
A$938 AUD
View
B+
Retailer 12
-
$650 USD
View
Retailer 13
-
$733 USD
View
Price last confirmed 48 days ago
B
Retailer 14
-
$803 USD
View
B
Retailer 15
-
$857 USD
View
B
Retailer 16
-
$919 USD
View
Most Expensive
B
MOH London
LG811647073 · Nov 2
$1,168 USD
£920 GBP
View
16 more retailers have this diamond
Prices start from $202 USDSave up to $966 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.

A
1.21ct Round
$202 USD