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Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 7566682513

Certificate GIA 7566682513

Diamond specifications and retailer prices

From $8,288 SGD
As of November 1, 2026
Save $5,087 SGD (38%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $13,375 SGD at Helzberg Diamonds · As of November 1, 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 I 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 7566682513. Listed at 14 retailers as of November 1, 2026, with prices from $8,288 to $13,375, a $5,087 spread on the same certified stone. Helzberg Diamonds lists it at $13,375. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.21°
Pavilion angle38.5°
OriginNatural
Grading LabGIA
CertificateGIA 7566682513
Dimensions11.51 × 6.08 × 3.55 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.51 mm6.08 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566682513
Side View
Table 61.0%Crown 34.21°Girdle: MED-THKPavilion 38.5°Culet: NDepth 58.3%

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: $13,375 SGD|Low: $8,288 SGD|High: $13,375 SGD|Avg: $10,026 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
November 2, 2026
Retailer 11$8,288 SGD
Retailer 5$8,597 SGD
Retailer 10$8,652 SGD
Retailer 8$8,770 SGD
Retailer 9$8,890 SGD
Retailer 6$9,143 SGD
Retailer 3$9,246 SGD
Retailer 4$10,347 SGD
Retailer 12$10,424 SGD
Retailer 13$10,488 SGD
Retailer 2$10,556 SGD
Retailer 7$11,748 SGD
Helzberg Diamonds$13,375 SGD

12 data points across 13 retailers

14 retailers$8,288 SGD to $13,375 SGD

A
Cheapest Retailer
-
$8,288 SGD
B+
Retailer 2
-
$8,597 SGD
$6,722 USD
View
B+
Retailer 3
-
$8,627 SGD
View
B+
Retailer 4
-
$8,652 SGD
$6,765 USD
View
B+
Retailer 5
-
$8,770 SGD
$6,857 USD
View
B+
Retailer 6
-
$8,890 SGD
$6,951 USD
View
B+
Retailer 7
-
$9,143 SGD
£5,629 GBP
View
B+
Retailer 8
-
$9,246 SGD
$7,230 USD
View
B+
Retailer 9
-
$10,347 SGD
$8,090 USD
View
B+
Retailer 10
-
$10,424 SGD
$8,151 USD
View
B+
Retailer 11
-
$10,488 SGD
$8,201 USD
View
B+
Retailer 12
-
$10,556 SGD
€7,861 EUR
View
B
Retailer 13
-
$11,748 SGD
$9,186 USD
View
Most Expensive
B
Helzberg Diamonds
XZRNLMMMOILHJ · Nov 1
$13,375 SGD
$10,458 USD
View
13 more retailers have this diamond
Prices start from $8,288 SGDSave up to $5,087 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
$8,288 SGD