Marquise|Natural|GIA

2.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5232973123

Certificate GIA 5232973123

Diamond specifications and retailer prices

From $21,209 USD
As of November 6, 2026
Save $17,840 USD (46%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $39,049 USD 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 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 5232973123. Listed at 10 retailers as of November 4, 2026, with prices from $21,209 to $39,049, a $17,840 spread on the same certified stone. MOH London lists it at $39,049. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5232973123
Dimensions13.68 × 7.36 × 4.45 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Feather
Top View
13.68 mm7.36 mm2.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5232973123
Side View
Table 59.0%CrownGirdlePavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $39,049 USD|Low: $21,209 USD|High: $40,881 USD|Avg: $28,543 USD|-4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$21,209 USD
Retailer 4$23,178 USD
Retailer 10$23,876 USD
Retailer 9$24,663 USD
Retailer 2$28,689 USD
Retailer 6$29,057 USD
Retailer 3$29,835 USD
Retailer 8$29,979 USD
Retailer 5$35,516 USD
MOH London$39,049 USD

37 data points across 10 retailers

10 retailers$21,209 USD to $39,049 USD

A
Cheapest Retailer
-
$21,209 USD
Retailer 2
-
$23,178 USD
View
Price last confirmed 3 days ago
Retailer 3
-
$23,876 USD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$24,663 USD
View
B
Retailer 5
-
$28,689 USD
View
B
Retailer 6
-
$29,057 USD
View
B
Retailer 7
-
$29,835 USD
View
B
Retailer 8
-
$29,979 USD
View
B
Retailer 9
-
$35,516 USD
View
Most Expensive
B
MOH London
65B18CEAC · Nov 4
$39,049 USD
£30,747 GBP
View
9 more retailers have this diamond
Prices start from $21,209 USDSave up to $17,840 USD

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
$21,209 USD