CaratHunter
Plans
Marquise|Natural|GIA

2.51ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 2564718645

Certificate GIA 2564718645

Diamond specifications and retailer prices

From $39,451 NZD
As of November 5, 2026
Save $24,129 NZD (38%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $63,580 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded H 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 2564718645. Listed at 10 retailers as of November 5, 2026, with prices from $39,451 to $63,580, a $24,129 spread on the same certified stone. Helzberg Diamonds lists it at $63,580. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.11°
Pavilion angle38.89°
OriginNatural
Grading LabGIA
CertificateGIA 2564718645
Dimensions14.31 × 6.76 × 4.27 mm
L/W Ratio2.12
Culet sizeNone
Top View
14.31 mm6.76 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564718645
Side View
Table 57.0%Crown 38.11°Girdle: STK-VTKPavilion 38.89°Culet: NoneDepth 63.1%

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 5
Current: $63,580 NZD|Low: $39,451 NZD|High: $63,580 NZD|Avg: $46,373 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$39,451 NZD
Retailer 3$41,886 NZD
Retailer 6$43,055 NZD
Retailer 7$43,389 NZD
Retailer 8$45,015 NZD
Retailer 5$48,927 NZD
Retailer 2$50,325 NZD
Retailer 9$50,654 NZD
Retailer 4$52,583 NZD
Helzberg Diamonds$63,580 NZD

9 data points across 10 retailers

10 retailers$39,451 NZD to $63,580 NZD

A
Cheapest Retailer
-
$39,451 NZD
A
Retailer 2
-
$41,886 NZD
View
B+
Retailer 3
-
$43,055 NZD
View
B+
Retailer 4
-
$43,389 NZD
View
B+
Retailer 5
-
$45,015 NZD
View
B+
Retailer 6
-
$48,927 NZD
View
B
Retailer 7
-
$50,325 NZD
View
B
Retailer 8
-
$50,654 NZD
View
B
Retailer 9
-
$52,583 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRILMKNHOMKL · Nov 6
$63,580 NZD
$35,741 USD
View
9 more retailers have this diamond
Prices start from $39,451 NZDSave up to $24,129 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
$39,451 NZD