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Marquise|Natural|GIA

2.51ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 6565739246

Certificate GIA 6565739246

Diamond specifications and retailer prices

From $34,848 NZD
As of November 4, 2026
Save $30,217 NZD (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $65,065 NZD at With Clarity · As of November 6, 2026
View at With Clarity

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6565739246. Listed at 12 retailers as of November 4, 2026, with prices from $34,848 to $65,065, a $30,217 spread on the same certified stone. With Clarity lists it at $65,065. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle43.59°
Pavilion angle39.18°
OriginNatural
Grading LabGIA
CertificateGIA 6565739246
Dimensions12.85 × 6.95 × 4.52 mm
L/W Ratio1.85
Culet sizeNone
Top View
12.85 mm6.95 mm2.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565739246
Side View
Table 57.0%Crown 43.59°Girdle: THN-VTKPavilion 39.18°Culet: NDepth 65.1%

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 4
Current: $44,454 NZD|Low: $34,848 NZD|High: $65,065 NZD|Avg: $41,640 NZD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
With Clarity
November 6, 2026
Retailer 3$34,848 NZD
Retailer 4$37,426 NZD
Retailer 10$37,575 NZD
Retailer 8$38,035 NZD
Retailer 9$38,050 NZD
Retailer 7$39,112 NZD
Retailer 11$39,769 NZD
Retailer 5$43,840 NZD
Retailer 1$44,454 NZD
Retailer 2$44,784 NZD
Retailer 6$46,634 NZD
With Clarity$65,065 NZD

9 data points across 12 retailers

12 retailers$34,848 NZD to $65,065 NZD

A
Cheapest Retailer
-
$34,848 NZD
A
Retailer 2
-
$37,426 NZD
View
B+
Retailer 3
-
$37,575 NZD
View
B+
Retailer 4
-
$38,035 NZD
View
B+
Retailer 5
-
$38,050 NZD
View
A
Retailer 6
-
$39,112 NZD
View
B+
Retailer 7
-
$39,769 NZD
View
B+
Retailer 8
-
$43,840 NZD
View
B+
Retailer 9
-
$44,454 NZD
View
B+
Retailer 10
-
$44,784 NZD
View
B+
Retailer 11
-
$46,634 NZD
View
Most Expensive
B
With Clarity
6565739246 · Nov 6
$65,065 NZD
$36,069 USD
View
11 more retailers have this diamond
Prices start from $34,848 NZDSave up to $30,217 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
$34,848 NZD