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2.51ct M VS1 Round Natural Diamond

EX • M/VS1 • GIA 1478171738

Certificate GIA 1478171738

Diamond specifications and retailer prices

From £7,332 GBP
As of November 6, 2026
Save £5,191 GBP (41%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £12,523 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded M colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 1478171738. Listed at 7 retailers as of November 5, 2026, with prices from £7,332 to £12,523, a £5,191 spread on the same certified stone. NZ Jewellers lists it at £12,523. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

2.51
Carat
M
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1478171738
Dimensions8.62 × 8.68 × 5.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
8.62 mm8.68 mm2.51 ctM / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1478171738
Side View
Table 59.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.2%

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 6
Current: £12,523 GBP|Low: £7,331 GBP|High: £12,523 GBP|Avg: £9,083 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 6£7,332 GBP
Retailer 4£8,157 GBP
Retailer 7£8,422 GBP
Retailer 5£8,761 GBP
Retailer 2£9,047 GBP
Retailer 3£9,238 GBP
NZ Jewellers£12,523 GBP

20 data points across 7 retailers

7 retailers£7,332 GBP to £12,523 GBP

A
Cheapest Retailer
-
£7,332 GBP
B+
Retailer 2
-
£8,157 GBP
View
B+
Retailer 3
-
£8,422 GBP
View
B+
Retailer 4
-
£8,761 GBP
View
B+
Retailer 5
-
£9,047 GBP
View
B+
Retailer 6
-
£9,238 GBP
View
Most Expensive
B
NZ Jewellers
07a642f4-5d7c-4ff5-8bfc-90baf1ca771f · Nov 5
£12,523 GBP
$16,855 USD
View
6 more retailers have this diamond
Prices start from £7,332 GBPSave up to £5,191 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
£7,332 GBP