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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5566279707

Certificate GIA 5566279707

Diamond specifications and retailer prices

From $3,486 CAD
As of November 6, 2026
Save $4,264 CAD (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,647 CAD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566279707. Listed at 22 retailers as of November 2, 2026, with a 122% 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5566279707
Dimensions6.75 × 6.70 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural, Extra Facet
Top View
6.75 mm6.70 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566279707
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°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: $8,647 CAD|Low: $3,486 CAD|High: $8,673 CAD|Avg: $5,483 CAD|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$3,486 CAD
Retailer 2$3,623 CAD
Retailer 6$4,074 CAD
Retailer 10$4,288 CAD
Retailer 3$4,434 CAD
Retailer 4$4,737 CAD
Retailer 7$5,408 CAD
Retailer 5$5,656 CAD
Retailer 8$7,750 CAD
Queensmith$8,647 CAD

24 data points across 10 retailers

22 retailers$3,486 CAD to $7,750 CAD

A
Cheapest Retailer
-
$3,486 CAD
A
Retailer 2
-
$3,623 CAD
View
A
Retailer 3
-
$4,074 CAD
View
B+
Retailer 4
-
$4,149 CAD
View
B+
Retailer 5
-
$4,276 CAD
View
Final sale: no returns
B+
Retailer 6
-
$4,288 CAD
View
B+
Retailer 7
-
$4,288 CAD
View
B+
Retailer 8
-
$4,434 CAD
View
Retailer 9
-
$4,635 CAD
View
Price last confirmed 19 days ago
Retailer 10
-
$4,635 CAD
View
Price last confirmed 25 days ago
B+
Retailer 11
-
$4,679 CAD
View
B+
Retailer 12
-
$4,737 CAD
View
Retailer 13
-
$4,813 CAD
View
Price last confirmed 22 days ago
B+
Retailer 14
-
$4,835 CAD
View
B+
Retailer 15
-
$4,857 CAD
View
Retailer 16
-
$4,969 CAD
View
Price last confirmed 33 days ago
Retailer 17
-
$5,348 CAD
View
Price last confirmed 19 days ago
B
Retailer 18
-
$5,408 CAD
View
B+
Retailer 19
-
$5,656 CAD
View
B
Retailer 20
-
$7,750 CAD
View
Retailer 21
-
$8,075 CAD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
5566279707 · Oct 28
$8,647 CAD
£4,875 GBP
View
Price last confirmed 8 days ago
21 more retailers have this diamond
Prices start from $3,486 CADSave up to $4,264 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
$3,486 CAD