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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 3515861893

Certificate GIA 3515861893

Diamond specifications and retailer prices

From $2,483 CAD
As of November 6, 2026
Save $5,761 CAD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,763 CAD at MOH London · As of November 2, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3515861893. Listed at 11 retailers as of November 5, 2026, with a 232% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 3515861893
Dimensions6.72 × 6.77 × 4.24 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
6.72 mm6.77 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515861893
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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 6
Current: $10,763 CAD|Low: $2,483 CAD|High: $10,763 CAD|Avg: $4,186 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$2,483 CAD
Retailer 4$3,869 CAD
Retailer 5$3,965 CAD
Retailer 6$6,237 CAD
Retailer 8$6,368 CAD
Retailer 7$6,410 CAD
Retailer 9$6,757 CAD
Retailer 3$8,244 CAD
MOH London$10,763 CAD

41 data points across 9 retailers

11 retailers$2,483 CAD to $8,244 CAD

A
Cheapest Retailer
-
$2,483 CAD
A
Retailer 2
-
$2,827 CAD
View
B+
Retailer 3
-
$3,436 CAD
View
B+
Retailer 4
-
$3,869 CAD
View
B
Retailer 5
-
$3,965 CAD
View
B
Retailer 6
-
$6,237 CAD
View
Final sale: no returns
B
Retailer 7
-
$6,368 CAD
View
B
Retailer 8
-
$6,410 CAD
View
Retailer 9
-
$6,757 CAD
View
Price last confirmed 8 days ago
C
Retailer 10
-
$8,244 CAD
View
Most Expensive
MOH London
0BE670D94 · Nov 2
$10,763 CAD
£6,068 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $2,483 CADSave up to $5,761 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
$2,483 CAD