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Radiant|Natural|GIA

2.51ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 2566503696

Certificate GIA 2566503696

Diamond specifications and retailer prices

From €16,402 EUR
$18,325 USD
As of October 31, 2026
Save €10,438 EUR (39%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €26,840 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2566503696. Listed at 9 retailers as of October 31, 2026, with prices from €16,402 to €26,840, a €10,438 spread on the same certified stone. MOH London lists it at €26,840. 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

2.51
Carat
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566503696
Dimensions8.59 × 6.77 × 4.73 mm
L/W Ratio1.27
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
8.59 mm6.77 mm2.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566503696
Side View
Table 73.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.9%

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: Oct 31
Current: €26,840 EUR|Low: €16,300 EUR|High: €26,983 EUR|Avg: €20,343 EUR|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8€16,300 EUR
Retailer 9€16,402 EUR
Retailer 2€17,876 EUR
Retailer 4€18,820 EUR
Retailer 5€20,208 EUR
Retailer 3€20,214 EUR
Retailer 7€20,855 EUR
Retailer 6€24,346 EUR
MOH London€26,840 EUR

9 data points across 9 retailers

9 retailers€16,402 EUR to €26,840 EUR

Retailer 1
-
€16,300 EUR
CA$25,292 CAD
Price last confirmed 10 days ago
A
Retailer 2
-
€16,402 EUR
$18,325 USD
View
B+
Retailer 3
-
€17,876 EUR
£15,725 GBP
View
B+
Retailer 4
-
€18,820 EUR
$21,026 USD
View
B+
Retailer 5
-
€20,208 EUR
View
B+
Retailer 6
-
€20,214 EUR
$22,583 USD
View
Retailer 7
-
€20,855 EUR
$23,300 USD
View
Price last confirmed 9 days ago
Retailer 8
-
€24,346 EUR
$27,200 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
4C62C121B · Nov 1
€26,840 EUR
£23,611 GBP
View
8 more retailers have this diamond
Prices start from €16,402 EURSave up to €10,438 EUR

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
2.51ct Radiant
€16,402 EUR