CaratHunter
Plans
Round|Natural|GIA

2.51ct G SI1 Round Natural Diamond

ID • G/SI1 • GIA 1548635175

Certificate GIA 1548635175

Diamond specifications and retailer prices

From £18,460 GBP
$24,735 USD
As of October 31, 2026
Save £6,250 GBP (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £24,711 GBP at Yorxs · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1548635175. Listed at 9 retailers as of October 31, 2026, with prices from £18,460 to £24,711, a £6,250 spread on the same certified stone. Yorxs lists it at £24,711. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1548635175
Dimensions8.60 × 8.64 × 5.38 mm
L/W Ratio1.00
Top View
8.60 mm8.64 mm2.51 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1548635175
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.5%

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: £22,844 GBP|Low: £18,249 GBP|High: £24,885 GBP|Avg: £21,491 GBP|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 1, 2026
Retailer 3£18,460 GBP
Retailer 2£20,628 GBP
Retailer 4£21,568 GBP
Retailer 1£22,844 GBP
Yorxs£24,711 GBP

35 data points across 5 retailers

9 retailers£18,460 GBP to £24,711 GBP

A
Cheapest Retailer
-
£18,460 GBP
$24,735 USD
B+
Retailer 2
-
£19,638 GBP
$26,313 USD
View
B+
Retailer 3
-
£20,628 GBP
$27,639 USD
View
Final sale: no returns
B+
Retailer 4
-
£21,568 GBP
$28,899 USD
View
B
Retailer 5
-
£22,270 GBP
$29,840 USD
View
B
Retailer 6
-
£22,270 GBP
$29,840 USD
View
B+
Retailer 7
-
£22,844 GBP
View
B
Retailer 8
-
£23,009 GBP
$30,830 USD
View
Most Expensive
B+
Yorxs
35517 · Nov 1
£24,711 GBP
€31,533 EUR
View
8 more retailers have this diamond
Prices start from £18,460 GBPSave up to £6,250 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
£18,460 GBP