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Marquise|Natural|GIA

2.50ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 2557186863

Certificate GIA 2557186863

Diamond specifications and retailer prices

From $50,126 NZD
As of November 2, 2026
Save $15,241 NZD (23%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $65,367 NZD at Cape Diamonds · As of November 1, 2026
View at Cape Diamonds

About this 2.5ct natural marquise diamond

This 2.5ct natural marquise sits in the two to three carat band, graded G 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 2557186863. Listed at 2 retailers as of November 1, 2026, with prices from $50,126 to $65,367, a $15,241 spread on the same certified stone. Cape Diamonds lists it at $65,367. 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

2.50
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle39.53°
Pavilion angle39.86°
OriginNatural
Grading LabGIA
CertificateGIA 2557186863
Dimensions12.87 × 6.94 × 4.50 mm
L/W Ratio1.85
Culet sizeNone
Top View
12.87 mm6.94 mm2.50 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2557186863
Side View
Table 56.0%Crown 39.53°Girdle: MED-VTKPavilion 39.86°Culet: NoneDepth 64.8%

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 2
Current: $65,367 NZD|Low: $30,914 NZD|High: $67,328 NZD|Avg: $48,469 NZD|+2.1%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 3$30,914 NZD
Retailer 10$37,855 NZD
Retailer 9$41,333 NZD
Retailer 7$43,055 NZD
Retailer 6$43,202 NZD
Retailer 5$47,892 NZD
Retailer 11$48,623 NZD
Retailer 2$50,126 NZD
Retailer 4$60,278 NZD
Cape Diamonds$65,367 NZD
Retailer 8$67,328 NZD

8 data points across 11 retailers

2 retailers$50,126 NZD to $65,367 NZD

B+
Cheapest Retailer
-
$50,126 NZD
Most Expensive
B
Cape Diamonds
cert_2557186863 · Nov 1
$65,367 NZD
ZAR 593,627 ZAR
View
1 more retailer has this diamond
Prices start from $50,126 NZDSave up to $15,241 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
$50,126 NZD