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Marquise|Natural|GIA

2.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6551291620

Certificate GIA 6551291620

Diamond specifications and retailer prices

From $37,948 NZD
CA$29,655 CAD
As of November 2, 2026
Save $24,447 NZD (39%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $62,395 NZD at MOH London · As of November 2, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551291620. Listed at 11 retailers as of November 2, 2026, with prices from $37,948 to $62,395, a $24,447 spread on the same certified stone. MOH London lists it at $62,395. 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

2.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.07°
OriginNatural
Grading LabGIA
CertificateGIA 6551291620
Dimensions13.51 × 7.14 × 4.53 mm
L/W Ratio1.89
Key to symbols
Twinning Wisp, Feather, Crystal, Needle
Top View
13.51 mm7.14 mm2.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551291620
Side View
Table 62.0%CrownGirdle: STK-VTKPavilion 40.07°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $62,395 NZD|Low: $31,235 NZD|High: $63,147 NZD|Avg: $42,905 NZD|-1.2%
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 3, 2026
Retailer 9$31,235 NZD
Retailer 4$33,659 NZD
Retailer 8$34,120 NZD
Retailer 13$37,948 NZD
Retailer 3$38,185 NZD
Retailer 10$38,573 NZD
Retailer 12$40,998 NZD
Retailer 14$41,541 NZD
Retailer 18$42,040 NZD
Retailer 5$43,331 NZD
Retailer 7$43,331 NZD
Retailer 16$43,812 NZD
Retailer 6$44,770 NZD
Retailer 17$47,058 NZD
Retailer 15$47,192 NZD
Retailer 2$48,551 NZD
Retailer 11$56,598 NZD
MOH London$62,395 NZD

15 data points across 18 retailers

11 retailers$37,948 NZD to $62,395 NZD

A
Cheapest Retailer
-
$37,948 NZD
CA$29,655 CAD
A
Retailer 2
-
$38,185 NZD
$21,485 USD
View
A
Retailer 3
-
$40,998 NZD
£18,163 GBP
View
B+
Retailer 4
-
$41,541 NZD
$23,373 USD
View
Retailer 5
-
$42,040 NZD
$23,654 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$43,812 NZD
$24,651 USD
View
B+
Retailer 7
-
$47,058 NZD
$26,477 USD
View
B+
Retailer 8
-
$47,192 NZD
€25,288 EUR
View
B
Retailer 9
-
$48,551 NZD
$27,317 USD
View
B
Retailer 10
-
$56,598 NZD
$31,845 USD
View
Most Expensive
B
MOH London
ED73D92D5 · Nov 2
$62,395 NZD
£27,643 GBP
View
10 more retailers have this diamond
Prices start from $37,948 NZDSave up to $24,447 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.

A
2.51ct Marquise
$37,948 NZD