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Marquise|Natural|GIA

2.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2567198254

Certificate GIA 2567198254

Diamond specifications and retailer prices

From $33,965 AUD
₹2,259,046 INR
As of November 3, 2026
Save $6,215 AUD (15%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $40,179 AUD at 77 Diamonds · As of November 3, 2026
View at 77 Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567198254. Listed at 3 retailers as of November 3, 2026, with prices from $33,965 to $40,179, a $6,215 spread on the same certified stone. 77 Diamonds lists it at $40,179. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2567198254
Dimensions13.32 × 7.13 × 4.31 mm
L/W Ratio1.87
Top View
13.32 mm7.13 mm2.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2567198254
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.5%

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 3
Current: $40,179 AUD|Low: $33,908 AUD|High: $40,586 AUD|Avg: $37,022 AUD|-0.7%
77 Diamonds
Retailer 2
Retailer 3
November 3, 2026
Retailer 2$33,965 AUD
Retailer 3$34,511 AUD
77 Diamonds$40,179 AUD

35 data points across 3 retailers

3 retailers$33,965 AUD to $40,179 AUD

B+
Cheapest Retailer
-
$33,965 AUD
₹2,259,046 INR
B+
Retailer 2
-
$34,511 AUD
CA$33,474 CAD
View
Most Expensive
B
77 Diamonds
MQMBR5E4RQSA · Nov 3
$40,179 AUD
£22,095 GBP
View
2 more retailers have this diamond
Prices start from $33,965 AUDSave up to $6,215 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.

B+
2.50ct Marquise
$33,965 AUD