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Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 7558189177

Certificate GIA 7558189177

Diamond specifications and retailer prices

From $4,345 SGD
As of November 4, 2026
Save $3,441 SGD (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,786 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7558189177. Listed at 15 retailers as of November 4, 2026, with prices from $4,345 to $7,786, a $3,441 spread on the same certified stone. Helzberg Diamonds lists it at $7,786. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.96°
Pavilion angle40.45°
OriginNatural
Grading LabGIA
CertificateGIA 7558189177
Dimensions10.13 × 5.47 × 3.52 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.13 mm5.47 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558189177
Side View
Table 61.0%Crown 39.96°Girdle: MED-VTKPavilion 40.45°Culet: NoneDepth 64.4%

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: $7,786 SGD|Low: $4,345 SGD|High: $8,271 SGD|Avg: $5,772 SGD|-5.9%
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 11$4,345 SGD
Retailer 13$4,415 SGD
Retailer 10$4,541 SGD
Retailer 9$4,643 SGD
Retailer 5$4,742 SGD
Retailer 6$4,960 SGD
Retailer 8$4,985 SGD
Retailer 3$5,526 SGD
Retailer 4$5,589 SGD
Retailer 7$5,777 SGD
Retailer 2$6,027 SGD
Retailer 12$7,327 SGD
Retailer 14$7,779 SGD
Helzberg Diamonds$7,786 SGD

28 data points across 14 retailers

15 retailers$4,345 SGD to $7,786 SGD

B+
Cheapest Retailer
-
$4,345 SGD
B+
Retailer 2
-
$4,415 SGD
View
B+
Retailer 3
-
$4,541 SGD
View
B+
Retailer 4
-
$4,643 SGD
View
B+
Retailer 5
-
$4,742 SGD
View
B+
Retailer 6
-
$4,960 SGD
View
B+
Retailer 7
-
$4,985 SGD
View
B+
Retailer 8
-
$5,526 SGD
View
B+
Retailer 9
-
$5,589 SGD
View
B+
Retailer 10
-
$5,777 SGD
View
B
Retailer 11
-
$6,027 SGD
View
B
Retailer 12
-
$6,318 SGD
View
B
Retailer 13
-
$7,327 SGD
View
B
Retailer 14
-
$7,779 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRNLLOHOPHNN · Nov 6
$7,786 SGD
$6,075 USD
View
14 more retailers have this diamond
Prices start from $4,345 SGDSave up to $3,441 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
$4,345 SGD