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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 $4,122 SGD
As of November 4, 2026
Save $3,717 SGD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,838 SGD 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 $4,122 to $7,838, a $3,717 spread on the same certified stone. Helzberg Diamonds lists it at $7,838. 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
Colour
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: $7,838 SGD|Low: $4,122 SGD|High: $7,838 SGD|Avg: $5,396 SGD
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$4,122 SGD
Retailer 11$4,191 SGD
Retailer 8$4,222 SGD
Retailer 6$4,404 SGD
Retailer 12$4,479 SGD
Retailer 7$4,732 SGD
Retailer 5$4,965 SGD
Retailer 9$5,220 SGD
Retailer 14$5,257 SGD
Retailer 4$5,331 SGD
Retailer 2$5,480 SGD
Retailer 10$6,951 SGD
Retailer 3$7,362 SGD
Helzberg Diamonds$7,838 SGD

23 data points across 14 retailers

14 retailers$4,122 SGD to $7,838 SGD

B+
Cheapest Retailer
-
$4,122 SGD
B+
Retailer 2
-
$4,191 SGD
View
B+
Retailer 3
-
$4,222 SGD
View
B
Retailer 4
-
$4,404 SGD
View
B
Retailer 5
-
$4,479 SGD
View
B
Retailer 6
-
$4,732 SGD
View
B
Retailer 7
-
$4,965 SGD
View
B
Retailer 8
-
$5,220 SGD
View
B
Retailer 9
-
$5,257 SGD
View
B
Retailer 10
-
$5,331 SGD
View
B
Retailer 11
-
$5,480 SGD
View
C
Retailer 12
-
$6,951 SGD
View
C
Retailer 13
-
$7,362 SGD
View
Most Expensive
C
Helzberg Diamonds
XZRNLMOLPNKLK · Nov 6
$7,838 SGD
$6,116 USD
View
13 more retailers have this diamond
Prices start from $4,122 SGDSave up to $3,717 SGD

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
$4,122 SGD