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Round|Natural|GIA

2.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 1537172367

Certificate GIA 1537172367

Diamond specifications and retailer prices

From £16,204 GBP
$21,712 USD
As of October 29, 2026
Save £5,604 GBP (26%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £21,808 GBP at Yorxs · As of October 29, 2026
View at Yorxs

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1537172367. Listed at 10 retailers as of October 29, 2026, with prices from £16,204 to £21,808, a £5,604 spread on the same certified stone. Yorxs lists it at £21,808. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1537172367
Dimensions8.61 × 8.66 × 5.42 mm
L/W Ratio1.01
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Needle
Top View
8.61 mm8.66 mm2.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1537172367
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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 29
Current: £21,479 GBP|Low: £16,018 GBP|High: £21,808 GBP|Avg: £18,913 GBP|-0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Yorxs
October 29, 2026
Retailer 5£16,204 GBP
Retailer 4£16,898 GBP
Retailer 3£17,786 GBP
Retailer 2£18,560 GBP
Retailer 6£20,457 GBP
Retailer 1£21,479 GBP
Yorxs£21,808 GBP

38 data points across 7 retailers

10 retailers£16,204 GBP to £21,808 GBP

A
Cheapest Retailer
-
£16,204 GBP
$21,712 USD
A
Retailer 2
-
£16,898 GBP
$22,641 USD
View
A
Retailer 3
-
£17,786 GBP
$23,831 USD
View
Final sale: no returns
A
Retailer 4
-
£18,560 GBP
$24,869 USD
View
Retailer 5
-
£19,488 GBP
$26,112 USD
View
Price last confirmed 31 days ago
Retailer 6
-
£20,107 GBP
$26,941 USD
View
Price last confirmed 26 days ago
B+
Retailer 7
-
£20,457 GBP
$27,410 USD
View
Retailer 8
-
£20,880 GBP
$27,977 USD
View
Price last confirmed 26 days ago
B+
Retailer 9
-
£21,479 GBP
View
Most Expensive
B+
Yorxs
19 · Oct 29
£21,808 GBP
€27,829 EUR
View
9 more retailers have this diamond
Prices start from £16,204 GBPSave up to £5,604 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 Round
£16,204 GBP