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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 7568597454

Certificate GIA 7568597454

Diamond specifications and retailer prices

From $4,524 CAD
As of November 4, 2026
Save $4,079 CAD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,603 CAD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7568597454. Listed at 14 retailers as of November 4, 2026, with prices from $4,524 to $8,603, a $4,079 spread on the same certified stone. Helzberg Diamonds lists it at $8,603. 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

1.20
Carat
I
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.98°
Pavilion angle40.29°
OriginNatural
Grading LabGIA
CertificateGIA 7568597454
Dimensions10.11 × 5.45 × 3.56 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.11 mm5.45 mm1.20 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7568597454
Side View
Table 55.0%Crown 38.98°Girdle: STK-ETKPavilion 40.29°Culet: NDepth 65.4%

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: Nov 4
Current: $8,603 CAD|Low: $4,524 CAD|High: $8,603 CAD|Avg: $5,923 CAD
Helzberg Diamonds
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
November 6, 2026
Retailer 13$4,524 CAD
Retailer 11$4,600 CAD
Retailer 8$4,633 CAD
Retailer 6$4,833 CAD
Retailer 12$4,916 CAD
Retailer 7$5,193 CAD
Retailer 5$5,449 CAD
Retailer 9$5,729 CAD
Retailer 14$5,770 CAD
Retailer 4$5,851 CAD
Retailer 2$6,015 CAD
Retailer 10$7,629 CAD
Retailer 3$8,080 CAD
Helzberg Diamonds$8,603 CAD

23 data points across 14 retailers

14 retailers$4,524 CAD to $8,603 CAD

B+
Cheapest Retailer
-
$4,524 CAD
B+
Retailer 2
-
$4,600 CAD
View
B+
Retailer 3
-
$4,633 CAD
View
B
Retailer 4
-
$4,833 CAD
View
B
Retailer 5
-
$4,916 CAD
View
B
Retailer 6
-
$5,193 CAD
View
B
Retailer 7
-
$5,449 CAD
View
B
Retailer 8
-
$5,729 CAD
View
B
Retailer 9
-
$5,770 CAD
View
B
Retailer 10
-
$5,851 CAD
View
B
Retailer 11
-
$6,015 CAD
View
C
Retailer 12
-
$7,629 CAD
View
C
Retailer 13
-
$8,080 CAD
View
Most Expensive
C
Helzberg Diamonds
XZRNLMOLPNKLK · Nov 6
$8,603 CAD
$6,116 USD
View
13 more retailers have this diamond
Prices start from $4,524 CADSave up to $4,079 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+
1.20ct Marquise
$4,524 CAD