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Marquise|Natural|GIA

1.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 5241109438

Certificate GIA 5241109438

Diamond specifications and retailer prices

From $4,214 SGD
As of November 4, 2026
Save $3,424 SGD (45%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,638 SGD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241109438. Listed at 9 retailers as of November 4, 2026, with prices from $4,214 to $7,638, a $3,424 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,638. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.07°
Pavilion angle40.14°
OriginNatural
Grading LabGIA
CertificateGIA 5241109438
Dimensions11.11 × 5.88 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.11 mm5.88 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5241109438
Side View
Table 59.0%Crown 40.07°Girdle: STK-THKPavilion 40.14°Culet: NDepth 64.2%

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 4
Current: $5,604 SGD|Low: $4,214 SGD|High: $7,638 SGD|Avg: $5,353 SGD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 6, 2026
Retailer 5$4,214 SGD
Retailer 4$4,502 SGD
Retailer 7$4,598 SGD
Retailer 8$5,123 SGD
Retailer 2$5,369 SGD
Retailer 6$5,438 SGD
Retailer 1$5,604 SGD
Retailer 3$7,106 SGD
Wholesale Diamonds Direct$7,638 SGD

6 data points across 9 retailers

9 retailers$4,214 SGD to $7,638 SGD

A
Cheapest Retailer
-
$4,214 SGD
A
Retailer 2
-
$4,502 SGD
View
A
Retailer 3
-
$4,598 SGD
View
B+
Retailer 4
-
$5,123 SGD
View
B+
Retailer 5
-
$5,369 SGD
View
B+
Retailer 6
-
$5,438 SGD
View
B+
Retailer 7
-
$5,604 SGD
View
B+
Retailer 8
-
$7,106 SGD
View
Most Expensive
B+
Wholesale Diamonds Direct
668871297 · Nov 6
$7,638 SGD
$5,960 USD
View
8 more retailers have this diamond
Prices start from $4,214 SGDSave up to $3,424 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
$4,214 SGD