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1.51ct F IF Round Natural Diamond

EX • F/IF • IGI 813691005

Shape and cutting style on the report: Round brilliant

Certificate IGI 813691005

Diamond specifications and retailer prices

From £6,694 GBP
As of November 4, 2026
Save £5,487 GBP (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £12,181 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 813691005. Listed at 14 retailers as of November 4, 2026, with prices from £6,694 to £12,181, a £5,487 spread on the same certified stone. NZ Jewellers lists it at £12,181. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 813691005
Dimensions7.26 × 7.31 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.26 mm7.31 mm1.51 ctF / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 813691005
Side View
Table 57.0%Crown 35.5°Girdle: Slightly ThickPavilion 41.1°CuletDepth 62.9%

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 4
Current: £12,181 GBP|Low: £6,694 GBP|High: £12,584 GBP|Avg: £9,042 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 13£6,694 GBP
Retailer 10£7,088 GBP
Retailer 4£7,485 GBP
Retailer 11£7,965 GBP
Retailer 8£7,980 GBP
Retailer 12£8,066 GBP
Retailer 7£8,620 GBP
Retailer 3£8,739 GBP
Retailer 6£8,874 GBP
Retailer 5£8,946 GBP
Retailer 14£10,084 GBP
Retailer 2£10,662 GBP
Retailer 9£11,383 GBP
NZ Jewellers£12,181 GBP

45 data points across 14 retailers

14 retailers£6,694 GBP to £12,181 GBP

A
Cheapest Retailer
-
£6,694 GBP
A
Retailer 2
-
£7,088 GBP
View
A
Retailer 3
-
£7,485 GBP
View
A
Retailer 4
-
£7,965 GBP
View
A
Retailer 5
-
£7,980 GBP
View
A
Retailer 6
-
£8,066 GBP
View
Final sale: no returns
A
Retailer 7
-
£8,620 GBP
View
A
Retailer 8
-
£8,739 GBP
View
A
Retailer 9
-
£8,874 GBP
View
A
Retailer 10
-
£8,946 GBP
View
A
Retailer 11
-
£10,084 GBP
View
B+
Retailer 12
-
£10,662 GBP
View
B+
Retailer 13
-
£11,383 GBP
View
Most Expensive
B+
NZ Jewellers
4570dd2a-77d6-4d3b-a76e-917f91e86356 · Nov 5
£12,181 GBP
$16,394 USD
View
13 more retailers have this diamond
Prices start from £6,694 GBPSave up to £5,487 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
1.51ct Round
£6,694 GBP