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Round|Lab Grown|IGI

1.21ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG763656334

Shape and cutting style on the report: Round brilliant

Certificate IGI LG763656334

Diamond specifications and retailer prices

From $345 USD
As of November 4, 2026
Save $845 USD (71%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,190 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG763656334 or 763656334. Listed at 10 retailers as of November 4, 2026, with prices from $345 to $1,190, a $845 spread on the same certified stone. MOH London lists it at $1,190. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763656334
Dimensions6.77 × 6.82 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.77 mm6.82 mm1.21 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG763656334
Side View
Table 59.0%Crown 35.9°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.4%

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 4
Current: $1,190 USD|Low: $345 USD|High: $1,208 USD|Avg: $688 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6$345 USD
Retailer 3$425 USD
Retailer 2$464 USD
Retailer 7$499 USD
Retailer 4$843 USD
Retailer 5$1,155 USD
MOH London$1,190 USD

41 data points across 7 retailers

10 retailers$345 USD to $1,190 USD

Retailer 1
-
$281 USD
Price last confirmed 62 days ago
B+
Retailer 2
-
$345 USD
View
A
Retailer 3
-
$425 USD
View
A
Retailer 4
-
$464 USD
View
A
Retailer 5
-
$499 USD
View
B+
Retailer 6
-
$626 USD
View
Retailer 7
-
$843 USD
View
Price last confirmed 7 days ago
B
Retailer 8
-
$874 USD
View
B
Retailer 9
-
$1,155 USD
View
Most Expensive
B
MOH London
LG763656334 · Nov 5
$1,190 USD
£937 GBP
View
9 more retailers have this diamond
Prices start from $345 USDSave up to $845 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
$345 USD