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Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 1569767420

Certificate GIA 1569767420

Diamond specifications and retailer prices

From £6,688 GBP
As of November 5, 2026
Save £5,630 GBP (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £12,318 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1569767420. Listed at 9 retailers as of November 5, 2026, with prices from £6,688 to £12,318, a £5,630 spread on the same certified stone. NZ Jewellers lists it at £12,318. 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
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.5°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 1569767420
Dimensions8.44 × 8.49 × 5.45 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Indented Natural, Needle
Top View
8.44 mm8.49 mm2.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1569767420
Side View
Table 57.0%Crown 38.5°Girdle: THN-THKPavilion 40.4°Culet: NoneDepth 64.4%

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 5
Current: £12,318 GBP|Low: £6,688 GBP|High: £12,318 GBP|Avg: £9,287 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3£6,688 GBP
Retailer 9£6,809 GBP
Retailer 8£8,838 GBP
Retailer 6£8,974 GBP
Retailer 5£9,186 GBP
Retailer 7£10,198 GBP
Retailer 2£10,499 GBP
Retailer 4£11,512 GBP
NZ Jewellers£12,318 GBP

7 data points across 9 retailers

9 retailers£6,688 GBP to £12,318 GBP

A
Cheapest Retailer
-
£6,688 GBP
A
Retailer 2
-
£6,809 GBP
View
B+
Retailer 3
-
£8,838 GBP
View
B+
Retailer 4
-
£8,974 GBP
View
B+
Retailer 5
-
£9,186 GBP
View
B+
Retailer 6
-
£10,198 GBP
View
B+
Retailer 7
-
£10,499 GBP
View
B
Retailer 8
-
£11,512 GBP
View
Most Expensive
B
NZ Jewellers
0289e17f-c5d5-4a98-903f-b1767c989118 · Nov 5
£12,318 GBP
$16,579 USD
View
8 more retailers have this diamond
Prices start from £6,688 GBPSave up to £5,630 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
£6,688 GBP