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Marquise|Natural|GIA

2.50ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 2556337990

Certificate GIA 2556337990

Diamond specifications and retailer prices

From $18,193 SGD
As of November 6, 2026
Save $12,981 SGD (42%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $31,173 SGD at MOH London · As of November 2, 2026
View at MOH London

About this 2.5ct natural marquise diamond

This 2.5ct natural marquise sits in the two to three 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 2556337990. Listed at 17 retailers as of November 2, 2026, with prices from $18,193 to $31,173, a $12,981 spread on the same certified stone. MOH London lists it at $31,173. 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

2.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.88°
Pavilion angle39.5°
OriginNatural
Grading LabGIA
CertificateGIA 2556337990
Dimensions13.11 × 6.94 × 4.48 mm
L/W Ratio1.89
Culet sizeNone
Top View
13.11 mm6.94 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556337990
Side View
Table 60.0%Crown 39.88°Girdle: MED-VTKPavilion 39.5°Culet: NoneDepth 64.5%

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 6
Current: $31,173 SGD|Low: $18,193 SGD|High: $31,550 SGD|Avg: $22,839 SGD|-0.9%
MOH London
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
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 3$18,193 SGD
Retailer 17$18,350 SGD
Retailer 16$19,562 SGD
Retailer 5$19,960 SGD
Retailer 6$20,126 SGD
Retailer 2$20,825 SGD
Retailer 13$21,291 SGD
Retailer 9$21,317 SGD
Retailer 7$21,625 SGD
Retailer 8$22,456 SGD
Retailer 14$23,122 SGD
Retailer 10$23,281 SGD
Retailer 11$24,211 SGD
Retailer 15$24,835 SGD
Retailer 12$27,600 SGD
Retailer 4$28,278 SGD
MOH London$31,173 SGD

35 data points across 17 retailers

17 retailers$18,193 SGD to $31,173 SGD

B+
Cheapest Retailer
-
$18,193 SGD
B+
Retailer 2
-
$18,350 SGD
View
B+
Retailer 3
-
$19,562 SGD
View
Retailer 4
-
$19,960 SGD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$20,126 SGD
View
B+
Retailer 6
-
$20,825 SGD
View
Retailer 7
-
$21,291 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$21,317 SGD
View
B+
Retailer 9
-
$21,625 SGD
View
B+
Retailer 10
-
$22,456 SGD
View
B
Retailer 11
-
$23,122 SGD
View
B+
Retailer 12
-
$23,281 SGD
View
B+
Retailer 13
-
$24,211 SGD
View
B
Retailer 14
-
$24,835 SGD
View
B
Retailer 15
-
$27,600 SGD
View
Retailer 16
-
$28,278 SGD
View
Price last confirmed 7 days ago
Most Expensive
B
MOH London
753FA0915 · Nov 2
$31,173 SGD
£19,217 GBP
View
16 more retailers have this diamond
Prices start from $18,193 SGDSave up to $12,981 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+
2.50ct Marquise
$18,193 SGD