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Marquise|Natural|GIA

2.50ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 7556868491

Certificate GIA 7556868491

Diamond specifications and retailer prices

From $16,150 USD
As of October 31, 2026
Save $9,114 USD (36%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $25,264 USD 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 7556868491. Listed at 4 retailers as of October 31, 2026, with prices from $16,150 to $25,264, a $9,114 spread on the same certified stone. MOH London lists it at $25,264. 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
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceStrong
Crown angle40.85°
Pavilion angle42.19°
OriginNatural
Grading LabGIA
CertificateGIA 7556868491
Dimensions12.68 × 7.03 × 4.68 mm
L/W Ratio1.80
Girdle conditionExtremely Thick
Key to symbols
Crystal, Knot, Feather, Cavity
Top View
12.68 mm7.03 mm2.50 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceStrong
CertificateGIA 7556868491
Side View
Table 66.0%Crown 40.85°GirdlePavilion 42.19°CuletDepth 66.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $25,264 USD|Low: $16,150 USD|High: $25,400 USD|Avg: $20,155 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4$16,150 USD
Retailer 2$18,869 USD
Retailer 3$19,344 USD
MOH London$25,264 USD

14 data points across 4 retailers

4 retailers$16,150 USD to $25,264 USD

B+
Cheapest Retailer
-
$16,150 USD
B+
Retailer 2
-
$18,869 USD
£14,858 GBP
View
B+
Retailer 3
-
$19,344 USD
View
Most Expensive
B
MOH London
A8ED12440 · Nov 1
$25,264 USD
£19,893 GBP
View
3 more retailers have this diamond
Prices start from $16,150 USDSave up to $9,114 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.

B+
2.50ct Marquise
$16,150 USD