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Marquise|Natural|GIA

2.50ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 2557150329

Certificate GIA 2557150329

Diamond specifications and retailer prices

From $28,920 AUD
$20,315 USD
As of November 1, 2026
Save $21,873 AUD (43%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $50,793 AUD at MOH London · As of November 1, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557150329. Listed at 18 retailers as of November 1, 2026, with prices from $28,920 to $50,793, a $21,873 spread on the same certified stone. MOH London lists it at $50,793. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557150329
Dimensions12.85 × 6.99 × 4.51 mm
L/W Ratio1.84
Culet sizeNone
Top View
12.85 mm6.99 mm2.50 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557150329
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.5%

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 1
Current: $50,793 AUD|Low: $29,352 AUD|High: $50,862 AUD|Avg: $36,512 AUD|-0.1%
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
November 2, 2026
Retailer 17$29,352 AUD
Retailer 9$29,898 AUD
Retailer 16$32,524 AUD
Retailer 5$32,752 AUD
Retailer 3$32,794 AUD
Retailer 11$33,048 AUD
Retailer 15$34,149 AUD
Retailer 8$34,758 AUD
Retailer 12$35,234 AUD
Retailer 13$36,588 AUD
Retailer 6$37,815 AUD
Retailer 2$37,934 AUD
Retailer 10$39,450 AUD
Retailer 4$39,533 AUD
Retailer 7$40,617 AUD
Retailer 14$46,075 AUD
MOH London$50,793 AUD

11 data points across 17 retailers

18 retailers$28,920 AUD to $50,793 AUD

A
Cheapest Retailer
-
$28,920 AUD
$20,315 USD
A
Retailer 2
-
$29,352 AUD
$20,618 USD
View
B+
Retailer 3
-
$29,898 AUD
$21,002 USD
View
Retailer 4
-
$32,524 AUD
$22,846 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$32,752 AUD
CA$31,954 CAD
View
B+
Retailer 6
-
$32,794 AUD
$23,036 USD
View
B+
Retailer 7
-
$33,048 AUD
£18,279 GBP
View
Retailer 8
-
$34,149 AUD
$23,988 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$34,758 AUD
$24,416 USD
View
B+
Retailer 10
-
$35,234 AUD
$24,750 USD
View
B+
Retailer 11
-
$36,588 AUD
$25,701 USD
View
B
Retailer 12
-
$37,815 AUD
$26,563 USD
View
B
Retailer 13
-
$37,934 AUD
£20,982 GBP
View
B
Retailer 14
-
$39,450 AUD
€26,392 EUR
View
B
Retailer 15
-
$39,533 AUD
$27,770 USD
View
B
Retailer 16
-
$40,617 AUD
$28,531 USD
View
B
Retailer 17
-
$46,075 AUD
$32,365 USD
View
Most Expensive
B
MOH London
18883BEF3 · Nov 1
$50,793 AUD
£28,094 GBP
View
17 more retailers have this diamond
Prices start from $28,920 AUDSave up to $21,873 AUD

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
2.50ct Marquise
$28,920 AUD