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Marquise|Natural|GIA

2.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1555451099

Certificate GIA 1555451099

Diamond specifications and retailer prices

From $50,476 NZD
As of November 1, 2026
Save $39,607 NZD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $90,083 NZD at MOH London · As of November 4, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555451099. Listed at 16 retailers as of November 1, 2026, with prices from $50,476 to $90,083, a $39,607 spread on the same certified stone. MOH London lists it at $90,083. 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

2.50
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555451099
Dimensions13.38 × 7.02 × 4.35 mm
L/W Ratio1.91
Culet sizeNone
Top View
13.38 mm7.02 mm2.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555451099
Side View
Table 61.0%Crown 39.7°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 61.9%

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: $90,083 NZD|Low: $50,245 NZD|High: $90,325 NZD|Avg: $60,872 NZD|+2.7%
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
November 6, 2026
Retailer 8$50,862 NZD
Retailer 3$52,346 NZD
Retailer 5$52,655 NZD
Retailer 7$55,487 NZD
Retailer 15$56,178 NZD
Retailer 12$57,675 NZD
Retailer 11$58,318 NZD
Retailer 4$60,244 NZD
Retailer 13$60,726 NZD
Retailer 2$61,619 NZD
Retailer 6$62,555 NZD
Retailer 14$62,655 NZD
Retailer 16$65,065 NZD
Retailer 9$67,500 NZD
Retailer 10$79,419 NZD
MOH London$90,083 NZD

21 data points across 16 retailers

16 retailers$50,476 NZD to $90,083 NZD

B+
Cheapest Retailer
-
$50,476 NZD
B+
Retailer 2
-
$52,346 NZD
View
B+
Retailer 3
-
$52,655 NZD
View
Retailer 4
-
$55,487 NZD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$56,178 NZD
View
B+
Retailer 6
-
$57,675 NZD
View
B+
Retailer 7
-
$58,318 NZD
View
B+
Retailer 8
-
$60,244 NZD
View
B
Retailer 9
-
$60,726 NZD
View
B
Retailer 10
-
$61,619 NZD
View
B
Retailer 11
-
$62,555 NZD
View
B
Retailer 12
-
$62,655 NZD
View
B+
Retailer 13
-
$65,065 NZD
View
B+
Retailer 14
-
$67,500 NZD
View
B
Retailer 15
-
$79,419 NZD
View
Most Expensive
B
MOH London
DD5D6BCC9 · Nov 4
$90,083 NZD
£39,874 GBP
View
15 more retailers have this diamond
Prices start from $50,476 NZDSave up to $39,607 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
$50,476 NZD