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Round|Natural|IGI

1.51ct G I1 Round Natural Diamond

EX • G/I1 • IGI 628465332

Shape and cutting style on the report: Round brilliant

Certificate IGI 628465332

Diamond specifications and retailer prices

From £1,389 GBP
₹177,293 INR
As of November 1, 2026
Save £2,721 GBP (66%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,111 GBP at NZ Jewellers · As of October 30, 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 G colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 628465332. Listed at 8 retailers as of October 30, 2026, with prices from £1,389 to £4,111, a £2,721 spread on the same certified stone. NZ Jewellers lists it at £4,111. 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 angle36°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 628465332
Dimensions7.31 × 7.34 × 4.58 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.31 mm7.34 mm1.51 ctG / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 628465332
Side View
Table 56.0%Crown 36°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.4%

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 1
Current: £4,111 GBP|Low: £1,386 GBP|High: £4,111 GBP|Avg: £2,266 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3£1,389 GBP
Retailer 4£1,761 GBP
Retailer 6£1,967 GBP
Retailer 8£1,967 GBP
Retailer 5£2,042 GBP
Retailer 7£2,269 GBP
Retailer 2£2,445 GBP
NZ Jewellers£4,111 GBP

42 data points across 8 retailers

8 retailers£1,389 GBP to £4,111 GBP

A
Cheapest Retailer
-
£1,389 GBP
₹177,293 INR
A
Retailer 2
-
£1,761 GBP
$2,360 USD
View
B+
Retailer 3
-
£1,967 GBP
$2,635 USD
View
B+
Retailer 4
-
£1,967 GBP
$2,635 USD
View
B+
Retailer 5
-
£2,042 GBP
$2,736 USD
View
B+
Retailer 6
-
£2,269 GBP
$3,040 USD
View
A
Retailer 7
-
£2,445 GBP
€3,120 EUR
View
Most Expensive
B
NZ Jewellers
6dcddb49-6113-4fd4-ab53-4a129925cb7b · Oct 30
£4,111 GBP
$5,508 USD
View
7 more retailers have this diamond
Prices start from £1,389 GBPSave up to £2,721 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
£1,389 GBP