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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 $25,693 NZD
As of November 6, 2026
Save $18,332 NZD (42%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $44,025 NZD 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 $25,693 to $44,025, a $18,332 spread on the same certified stone. MOH London lists it at $44,025. 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: $44,025 NZD|Low: $25,693 NZD|High: $44,557 NZD|Avg: $32,255 NZD|-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$25,693 NZD
Retailer 17$25,915 NZD
Retailer 16$27,627 NZD
Retailer 5$28,190 NZD
Retailer 6$28,424 NZD
Retailer 2$29,411 NZD
Retailer 13$30,069 NZD
Retailer 9$30,105 NZD
Retailer 7$30,540 NZD
Retailer 8$31,714 NZD
Retailer 14$32,654 NZD
Retailer 10$32,880 NZD
Retailer 11$34,193 NZD
Retailer 15$35,073 NZD
Retailer 12$38,979 NZD
Retailer 4$39,937 NZD
MOH London$44,025 NZD

35 data points across 17 retailers

17 retailers$25,693 NZD to $44,025 NZD

B+
Cheapest Retailer
-
$25,693 NZD
B+
Retailer 2
-
$25,915 NZD
View
B+
Retailer 3
-
$27,627 NZD
View
Retailer 4
-
$28,190 NZD
View
Price last confirmed 8 days ago
Retailer 5
-
$28,424 NZD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$29,411 NZD
View
Retailer 7
-
$30,069 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$30,105 NZD
View
B+
Retailer 9
-
$30,540 NZD
View
B+
Retailer 10
-
$31,714 NZD
View
B
Retailer 11
-
$32,654 NZD
View
B+
Retailer 12
-
$32,880 NZD
View
B+
Retailer 13
-
$34,193 NZD
View
B
Retailer 14
-
$35,073 NZD
View
B
Retailer 15
-
$38,979 NZD
View
Retailer 16
-
$39,937 NZD
View
Price last confirmed 7 days ago
Most Expensive
B
MOH London
753FA0915 · Nov 2
$44,025 NZD
£19,217 GBP
View
16 more retailers have this diamond
Prices start from $25,693 NZDSave up to $18,332 NZD

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
$25,693 NZD