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Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566304544

Certificate GIA 2566304544

Diamond specifications and retailer prices

From $2,836 CAD
As of November 6, 2026
Save $4,095 CAD (59%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,932 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566304544. Listed at 12 retailers as of November 4, 2026, with prices from $2,836 to $6,932, a $4,095 spread on the same certified stone. MOH London lists it at $6,932. 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

1.20
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566304544
Dimensions6.73 × 6.78 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity
Top View
6.73 mm6.78 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566304544
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.9%

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 6
Current: $6,932 CAD|Low: $2,836 CAD|High: $7,034 CAD|Avg: $4,466 CAD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$2,836 CAD
Retailer 3$3,645 CAD
Retailer 8$3,890 CAD
Retailer 4$4,005 CAD
Retailer 5$4,007 CAD
Retailer 6$4,443 CAD
Retailer 7$4,842 CAD
MOH London$6,932 CAD

28 data points across 8 retailers

12 retailers$2,836 CAD to $6,932 CAD

A
Cheapest Retailer
-
$2,836 CAD
A
Retailer 2
-
$3,336 CAD
View
A
Retailer 3
-
$3,553 CAD
View
A
Retailer 4
-
$3,645 CAD
View
B+
Retailer 5
-
$3,890 CAD
View
B+
Retailer 6
-
$4,005 CAD
View
A
Retailer 7
-
$4,007 CAD
View
B+
Retailer 8
-
$4,036 CAD
View
B+
Retailer 9
-
$4,443 CAD
View
Retailer 10
-
$4,444 CAD
View
Price last confirmed 30 days ago
B+
Retailer 11
-
$4,842 CAD
View
Most Expensive
B
MOH London
299C4EEEE · Nov 4
$6,932 CAD
£3,908 GBP
View
11 more retailers have this diamond
Prices start from $2,836 CADSave up to $4,095 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
1.20ct Round
$2,836 CAD