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Radiant|Natural|GIA

2.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1567577300

Certificate GIA 1567577300

Diamond specifications and retailer prices

From £13,850 GBP
HK$145,200 HKD
As of November 1, 2026
Save £11,472 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £25,322 GBP 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1567577300. Listed at 13 retailers as of November 1, 2026, with prices from £13,850 to £25,322, a £11,472 spread on the same certified stone. MOH London lists it at £25,322. 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

2.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1567577300
Dimensions8.84 × 6.77 × 4.66 mm
L/W Ratio1.31
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal
Top View
8.84 mm6.77 mm2.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1567577300
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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: Nov 1
Current: £25,322 GBP|Low: £13,850 GBP|High: £25,458 GBP|Avg: £18,146 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12£13,850 GBP
Retailer 2£14,206 GBP
Retailer 4£16,487 GBP
Retailer 6£17,151 GBP
Retailer 3£17,434 GBP
Retailer 5£18,654 GBP
Retailer 11£18,724 GBP
Retailer 9£18,791 GBP
Retailer 10£19,388 GBP
Retailer 7£20,134 GBP
Retailer 8£22,970 GBP
MOH London£25,322 GBP

12 data points across 12 retailers

13 retailers£13,850 GBP to £25,322 GBP

A
Cheapest Retailer
-
£13,850 GBP
HK$145,200 HKD
A
Retailer 2
-
£14,206 GBP
₹1,815,643 INR
View
B+
Retailer 3
-
£15,363 GBP
A$31,717 AUD
View
B+
Retailer 4
-
£16,487 GBP
$22,125 USD
View
B+
Retailer 5
-
£17,151 GBP
$23,016 USD
View
Final sale: no returns
B+
Retailer 6
-
£17,434 GBP
$23,395 USD
View
B+
Retailer 7
-
£18,654 GBP
View
B
Retailer 8
-
£18,724 GBP
$25,127 USD
View
B+
Retailer 9
-
£18,791 GBP
$25,217 USD
View
B
Retailer 10
-
£19,388 GBP
$26,018 USD
View
B
Retailer 11
-
£20,134 GBP
$27,019 USD
View
B
Retailer 12
-
£22,970 GBP
$30,824 USD
View
Most Expensive
B
MOH London
ECDD29573 · Nov 1
£25,322 GBP
View
12 more retailers have this diamond
Prices start from £13,850 GBPSave up to £11,472 GBP

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
£13,850 GBP