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Round|Natural|IGI

1.51ct G I1 Round Natural Diamond

EX • G/I1 • IGI 743557994

Shape and cutting style on the report: Round brilliant

Certificate IGI 743557994

Diamond specifications and retailer prices

From £668 GBP
₹85,210 INR
As of October 30, 2026
Save £116 GBP (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £784 GBP at William & Sons Jewelers · As of October 30, 2026
View at William & Sons Jewelers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 743557994. Listed at 5 retailers as of October 30, 2026, with prices from £668 to £784, a £116 spread on the same certified stone. William & Sons Jewelers lists it at £784. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.6°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 743557994
Dimensions7.27 × 7.33 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.27 mm7.33 mm1.51 ctG / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 743557994
Side View
Table 55.0%Crown 32.6°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £668 GBP|Low: £633 GBP|High: £886 GBP|Avg: £753 GBP|-7.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
William & Sons Jewelers
October 30, 2026
Retailer 1£668 GBP
Retailer 2£724 GBP
Retailer 3£746 GBP
Retailer 4£773 GBP
William & Sons Jewelers£784 GBP

31 data points across 5 retailers

5 retailers£668 GBP to £784 GBP

A
Cheapest Retailer
-
£668 GBP
₹85,210 INR
A
Retailer 2
-
£724 GBP
$970 USD
View
Retailer 3
-
£746 GBP
$1,000 USD
View
Price last confirmed 10 days ago
A
Retailer 4
-
£773 GBP
$1,036 USD
View
Most Expensive
B+
William & Sons Jewelers
cert_743557994 · Oct 30
£784 GBP
$1,050 USD
View
Final sale: no returns
4 more retailers have this diamond
Prices start from £668 GBPSave up to £116 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
£668 GBP