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Round|Lab Grown|IGI

1.21ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG763668397

Shape and cutting style on the report: Round brilliant

Certificate IGI LG763668397

Diamond specifications and retailer prices

From $225 CAD
As of November 1, 2026
Save $1,075 CAD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,300 CAD at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG763668397 or 763668397. Listed at 13 retailers as of November 1, 2026, with prices from $225 to $1,300, a $1,075 spread on the same certified stone. MOH London lists it at $1,300. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle36.1°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763668397
Dimensions6.92 × 6.90 × 4.05 mm
L/W Ratio1.00
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
6.92 mm6.90 mm1.21 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG763668397
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 58.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,300 CAD|Low: $212 CAD|High: $1,337 CAD|Avg: $574 CAD|-2.8%
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 6, 2026
Retailer 10$225 CAD
Retailer 11$251 CAD
Retailer 5$277 CAD
Retailer 4$278 CAD
Retailer 2$483 CAD
Retailer 8$485 CAD
Retailer 13$501 CAD
Retailer 3$515 CAD
Retailer 12$627 CAD
Retailer 6$628 CAD
Retailer 7$760 CAD
Retailer 9$768 CAD
MOH London$1,300 CAD

36 data points across 13 retailers

13 retailers$225 CAD to $1,300 CAD

A
Cheapest Retailer
-
$225 CAD
A
Retailer 2
-
$251 CAD
View
Final sale: no returns
Retailer 3
-
$277 CAD
View
Price last confirmed 52 days ago
Retailer 4
-
$278 CAD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$483 CAD
View
B+
Retailer 6
-
$485 CAD
View
B
Retailer 7
-
$501 CAD
View
B+
Retailer 8
-
$515 CAD
View
B+
Retailer 9
-
$627 CAD
View
B+
Retailer 10
-
$628 CAD
View
B
Retailer 11
-
$760 CAD
View
B
Retailer 12
-
$768 CAD
View
Most Expensive
B
MOH London
LG763668397 · Nov 1
$1,300 CAD
£733 GBP
View
12 more retailers have this diamond
Prices start from $225 CADSave up to $1,075 CAD

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
$225 CAD