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Round|Lab Grown|IGI

1.21ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG783646807

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783646807

Diamond specifications and retailer prices

From $202 USD
As of November 5, 2026
Save $964 USD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,166 USD at MOH London · As of November 5, 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 LG783646807 or 783646807. Listed at 17 retailers as of November 5, 2026, with prices from $202 to $1,166, a $964 spread on the same certified stone. MOH London lists it at $1,166. 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 angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783646807
Dimensions6.88 × 6.86 × 4.19 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.88 mm6.86 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783646807
Side View
Table 57.0%Crown 33.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.0%

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 5
Current: $1,166 USD|Low: $194 USD|High: $1,182 USD|Avg: $547 USD|-1.3%
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 5, 2026
Retailer 11$202 USD
Retailer 12$250 USD
Retailer 5$413 USD
Retailer 10$431 USD
Retailer 13$433 USD
Retailer 9$458 USD
Retailer 3$494 USD
Retailer 6$515 USD
Retailer 2$600 USD
Retailer 7$609 USD
Retailer 8$650 USD
Retailer 4$901 USD
MOH London$1,166 USD

30 data points across 13 retailers

17 retailers$202 USD to $1,166 USD

A
Cheapest Retailer
-
$202 USD
A
Retailer 2
-
$234 USD
View
Retailer 3
-
$250 USD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$250 USD
View
A
Retailer 5
-
$413 USD
View
A
Retailer 6
-
$431 USD
View
A
Retailer 7
-
$433 USD
View
B+
Retailer 8
-
$458 USD
View
B+
Retailer 9
-
$494 USD
View
B+
Retailer 10
-
$515 USD
View
B+
Retailer 11
-
$600 USD
View
B+
Retailer 12
-
$609 USD
View
B+
Retailer 13
-
$650 USD
View
B
Retailer 14
-
$803 USD
View
B
Retailer 15
-
$856 USD
View
B
Retailer 16
-
$919 USD
View
Most Expensive
B
MOH London
LG783646807 · Nov 5
$1,166 USD
£918 GBP
View
16 more retailers have this diamond
Prices start from $202 USDSave up to $964 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