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Round|Lab Grown|IGI

1.21ct F VVS1 Round Lab Grown Diamond

ID • F/VVS1 • IGI LG851617110

Shape and cutting style on the report: Round brilliant

Certificate IGI LG851617110

Diamond specifications and retailer prices

From $185 USD
As of November 1, 2026
Save $889 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,074 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 F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG851617110 or 851617110. Listed at 19 retailers as of November 1, 2026, with prices from $185 to $1,074, a $889 spread on the same certified stone. MOH London lists it at $1,074. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851617110
Dimensions6.87 × 6.89 × 4.15 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.87 mm6.89 mm1.21 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851617110
Side View
Table 59.0%Crown 33.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.4%

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 1
Current: $1,074 USD|Low: $185 USD|High: $1,074 USD|Avg: $495 USD
MOH London
Retailer 2
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Retailer 19
November 3, 2026
Retailer 4$185 USD
Retailer 18$215 USD
Retailer 15$230 USD
Retailer 7$269 USD
Retailer 9$310 USD
Retailer 5$386 USD
Retailer 12$397 USD
Retailer 14$397 USD
Retailer 2$415 USD
Retailer 19$466 USD
Retailer 6$477 USD
Retailer 17$548 USD
Retailer 13$560 USD
Retailer 10$590 USD
Retailer 16$739 USD
Retailer 11$761 USD
Retailer 3$783 USD
Retailer 8$793 USD
MOH London$1,074 USD

7 data points across 19 retailers

19 retailers$185 USD to $1,074 USD

A
Cheapest Retailer
-
$185 USD
A
Retailer 2
-
$215 USD
View
A
Retailer 3
-
$230 USD
View
A
Retailer 4
-
$269 USD
HK$2,100 HKD
View
B+
Retailer 5
-
$310 USD
View
A
Retailer 6
-
$386 USD
€368 EUR
View
A
Retailer 7
-
$397 USD
£312 GBP
View
A
Retailer 8
-
$397 USD
ZAR 6,411 ZAR
View
A
Retailer 9
-
$415 USD
£327 GBP
View
B+
Retailer 10
-
$466 USD
View
B+
Retailer 11
-
$477 USD
View
B+
Retailer 12
-
$548 USD
View
B+
Retailer 13
-
$560 USD
A$862 AUD
View
B+
Retailer 14
-
$590 USD
View
B
Retailer 15
-
$739 USD
View
B
Retailer 16
-
$761 USD
SGD 1,029 SGD
View
B
Retailer 17
-
$783 USD
View
B
Retailer 18
-
$793 USD
View
Most Expensive
B
MOH London
LG851617110 · Nov 2
$1,074 USD
£846 GBP
View
18 more retailers have this diamond
Prices start from $185 USDSave up to $889 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
$185 USD