Radiant|Natural|GIA

2.50ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 1

Certificate GIA 1

Diamond specifications and retailer prices

From $24,471 USD
As of October 30, 2026
Save $4,395 USD (15%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $28,866 USD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 2.5ct natural radiant diamond

This 2.5ct natural radiant sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of October 30, 2026, with prices from $24,471 to $28,866, a $4,395 spread on the same certified stone. Blue Nile lists it at $28,866. 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
E
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1
Dimensions8.69 × 6.89 × 4.74 mm
L/W Ratio1.26
Top View
8.69 mm6.89 mm2.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.9%

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: Oct 30
Current: $28,866 USD|Low: $24,230 USD|High: $31,855 USD|Avg: $28,587 USD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 23, 2026
Retailer 2$24,471 USD
Retailer 6$26,280 USD
Blue Nile$28,866 USD
Retailer 3$29,496 USD
Retailer 4$30,675 USD
Retailer 5$31,855 USD

2 data points across 6 retailers

3 retailers$24,471 USD to $28,866 USD

A
Cheapest Retailer
-
$24,471 USD
A
Retailer 2
-
$26,280 USD
View
Most Expensive
B+
Blue Nile
29829294 · Oct 31
$28,866 USD
View
2 more retailers have this diamond
Prices start from $24,471 USDSave up to $4,395 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 Radiant
$24,471 USD