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Round|Lab Grown|IGI

1.21ct I SI1 Round Lab Grown Diamond

VG • I/SI1 • IGI LG843641795

Shape and cutting style on the report: Round brilliant

Certificate IGI LG843641795

Diamond specifications and retailer prices

From $365 CAD
As of October 30, 2026
Save $596 CAD (62%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,561 CAD at MOH London · As of October 25, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG843641795 or 843641795. Listed at 14 retailers as of October 30, 2026, with a 164% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843641795
Dimensions6.90 × 6.87 × 4.11 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.90 mm6.87 mm1.21 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG843641795
Side View
Table 59.0%Crown 35.5°Girdle: MediumPavilion 39.8°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,561 CAD|Low: $268 CAD|High: $1,599 CAD|Avg: $741 CAD|-0.3%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 6$314 CAD
Retailer 3$352 CAD
Retailer 11$365 CAD
Retailer 15$390 CAD
Retailer 2$475 CAD
Retailer 14$528 CAD
Retailer 8$587 CAD
Retailer 13$642 CAD
Retailer 12$754 CAD
Retailer 10$925 CAD
Retailer 5$929 CAD
Retailer 9$961 CAD
Retailer 7$1,071 CAD
Retailer 4$1,327 CAD
MOH London$1,561 CAD

14 data points across 15 retailers

14 retailers$365 CAD to $961 CAD

Retailer 1
-
$314 CAD
Price last confirmed 11 days ago
B+
Retailer 2
-
$365 CAD
View
Retailer 3
-
$390 CAD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
$475 CAD
View
B+
Retailer 5
-
$528 CAD
View
B+
Retailer 6
-
$587 CAD
View
B+
Retailer 7
-
$642 CAD
View
B+
Retailer 8
-
$754 CAD
View
B+
Retailer 9
-
$925 CAD
View
Retailer 10
-
$929 CAD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
$961 CAD
View
Retailer 12
-
$1,071 CAD
View
Price last confirmed 13 days ago
Retailer 13
-
$1,327 CAD
View
Price last confirmed 10 days ago
Most Expensive
MOH London
LG843641795 · Oct 25
$1,561 CAD
£880 GBP
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from $365 CADSave up to $596 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.

B+
1.21ct Round
$365 CAD