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Round|Lab Grown|GIA

1.21ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • GIA 2497979319

Shape and cutting style on the report: Round

Certificate GIA 2497979319

Diamond specifications and retailer prices

From $557 CAD
As of November 5, 2026
Save $965 CAD (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,522 CAD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2497979319. Listed at 6 retailers as of November 5, 2026, with prices from $557 to $1,522, a $965 spread on the same certified stone. Brilliant Earth lists it at $1,522. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginLab Grown
Grading LabGIA
CertificateGIA 2497979319
Dimensions6.86 × 6.89 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.86 mm6.89 mm1.21 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2497979319
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 41.4°Culet: NoneDepth 61.4%

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 5
Current: $1,522 CAD|Low: $547 CAD|High: $2,775 CAD|Avg: $1,445 CAD|-4.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$557 CAD
Retailer 7$839 CAD
Retailer 6$918 CAD
Retailer 2$1,028 CAD
Retailer 5$1,078 CAD
Retailer 3$1,466 CAD
Retailer 11$1,466 CAD
Brilliant Earth$1,522 CAD
Retailer 4$1,549 CAD
Retailer 10$1,844 CAD
Retailer 9$2,348 CAD
Retailer 12$2,775 CAD

24 data points across 12 retailers

6 retailers$557 CAD to $1,522 CAD

A
Cheapest Retailer
-
$557 CAD
B+
Retailer 2
-
$839 CAD
View
B
Retailer 3
-
$918 CAD
View
B
Retailer 4
-
$1,028 CAD
View
B
Retailer 5
-
$1,078 CAD
View
Most Expensive
B
Brilliant Earth
11210145A · Nov 5
$1,522 CAD
$1,090 USD
View
5 more retailers have this diamond
Prices start from $557 CADSave up to $965 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
$557 CAD