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Marquise|Natural|GIA

2.51ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 2557879948

Certificate GIA 2557879948

Diamond specifications and retailer prices

From $41,093 NZD
As of November 1, 2026
Save $31,869 NZD (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $72,962 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557879948. Listed at 15 retailers as of November 1, 2026, with prices from $41,093 to $72,962, a $31,869 spread on the same certified stone. MOH London lists it at $72,962. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557879948
Dimensions14.79 × 6.91 × 3.75 mm
L/W Ratio2.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Indented Natural, Crystal, Cavity, Needle, Natural
Top View
14.79 mm6.91 mm2.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557879948
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 54.3%

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 1
Current: $72,962 NZD|Low: $41,093 NZD|High: $74,039 NZD|Avg: $51,682 NZD|-1.5%
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
Retailer 18
November 6, 2026
Retailer 14$41,093 NZD
Retailer 5$42,516 NZD
Retailer 16$42,648 NZD
Retailer 4$44,890 NZD
Retailer 17$46,842 NZD
Retailer 13$47,161 NZD
Retailer 10$47,289 NZD
Retailer 3$47,937 NZD
Retailer 6$48,152 NZD
Retailer 18$48,794 NZD
Retailer 15$49,185 NZD
Retailer 8$52,697 NZD
Retailer 2$53,605 NZD
Retailer 7$56,305 NZD
Retailer 11$56,513 NZD
Retailer 9$61,628 NZD
Retailer 12$64,323 NZD
MOH London$72,962 NZD

28 data points across 18 retailers

15 retailers$41,093 NZD to $72,962 NZD

B+
Cheapest Retailer
-
$41,093 NZD
B+
Retailer 2
-
$42,516 NZD
View
B+
Retailer 3
-
$42,648 NZD
View
B+
Retailer 4
-
$44,890 NZD
View
Final sale: no returns
Retailer 5
-
$46,842 NZD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$47,161 NZD
View
B
Retailer 7
-
$47,937 NZD
View
B
Retailer 8
-
$48,152 NZD
View
B
Retailer 9
-
$48,794 NZD
View
B
Retailer 10
-
$49,185 NZD
View
B
Retailer 11
-
$52,697 NZD
View
B
Retailer 12
-
$53,605 NZD
View
B
Retailer 13
-
$56,513 NZD
View
B
Retailer 14
-
$64,323 NZD
View
Most Expensive
C
MOH London
2CC952645 · Nov 4
$72,962 NZD
£31,848 GBP
View
14 more retailers have this diamond
Prices start from $41,093 NZDSave up to $31,869 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+
2.51ct Marquise
$41,093 NZD