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Marquise|Natural|GIA

1.51ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1558832149

Certificate GIA 1558832149

Diamond specifications and retailer prices

From $8,020 SGD
As of November 1, 2026
Save $5,147 SGD (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $13,166 SGD at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558832149. Listed at 12 retailers as of November 1, 2026, with prices from $8,020 to $13,166, a $5,147 spread on the same certified stone. Helzberg Diamonds lists it at $13,166. 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

1.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.29°
Pavilion angle40.19°
OriginNatural
Grading LabGIA
CertificateGIA 1558832149
Dimensions11.14 × 5.89 × 3.80 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.14 mm5.89 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558832149
Side View
Table 60.0%Crown 39.29°Girdle: STK-VTKPavilion 40.19°Culet: NoneDepth 64.4%

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 1
Current: $13,166 SGD|Low: $8,020 SGD|High: $13,752 SGD|Avg: $9,972 SGD|-4.3%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9$8,020 SGD
Retailer 2$8,023 SGD
Retailer 10$8,349 SGD
Retailer 11$8,487 SGD
Retailer 8$8,603 SGD
Retailer 6$8,850 SGD
Retailer 4$10,032 SGD
Retailer 12$10,102 SGD
Retailer 3$10,184 SGD
Retailer 5$10,219 SGD
Retailer 7$11,369 SGD
Helzberg Diamonds$13,166 SGD

31 data points across 12 retailers

12 retailers$8,020 SGD to $13,166 SGD

A
Cheapest Retailer
-
$8,020 SGD
A
Retailer 2
-
$8,023 SGD
$6,273 USD
View
A
Retailer 3
-
$8,349 SGD
View
A
Retailer 4
-
$8,487 SGD
$6,636 USD
View
A
Retailer 5
-
$8,603 SGD
$6,727 USD
View
A
Retailer 6
-
$8,850 SGD
£5,449 GBP
View
B+
Retailer 7
-
$10,032 SGD
$7,844 USD
View
B+
Retailer 8
-
$10,102 SGD
$7,899 USD
View
B+
Retailer 9
-
$10,184 SGD
$7,963 USD
View
B+
Retailer 10
-
$10,219 SGD
€7,610 EUR
View
B+
Retailer 11
-
$11,369 SGD
$8,890 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLOOJIHKP · Nov 2
$13,166 SGD
$10,295 USD
View
11 more retailers have this diamond
Prices start from $8,020 SGDSave up to $5,147 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.

A
1.51ct Marquise
$8,020 SGD