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Round|Natural|IGI

1.51ct I I1 Round Natural Diamond

EX • I/I1 • IGI 528214305

Shape and cutting style on the report: Round brilliant

Certificate IGI 528214305

Diamond specifications and retailer prices

From £1,614 GBP
$2,162 USD
As of October 30, 2026
Save £2,120 GBP (57%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,734 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 I colour (near-colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 528214305. Listed at 7 retailers as of October 30, 2026, with prices from £1,614 to £3,734, a £2,120 spread on the same certified stone. NZ Jewellers lists it at £3,734. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 528214305
Dimensions7.20 × 7.25 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.20 mm7.25 mm1.51 ctI / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 528214305
Side View
Table 56.0%Crown 36.5°GirdlePavilion 40.5°Culet: NoneDepth 63.3%

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: Oct 30
Current: £2,230 GBP|Low: £1,249 GBP|High: £2,230 GBP|Avg: £1,808 GBP|+2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 4£1,249 GBP
Retailer 2£1,614 GBP
Retailer 3£2,125 GBP
Retailer 1£2,230 GBP

17 data points across 4 retailers

7 retailers£1,614 GBP to £3,734 GBP

A
Cheapest Retailer
-
£1,614 GBP
$2,162 USD
B+
Retailer 2
-
£1,786 GBP
$2,393 USD
View
B+
Retailer 3
-
£1,786 GBP
$2,393 USD
View
B+
Retailer 4
-
£1,869 GBP
$2,504 USD
View
B+
Retailer 5
-
£2,061 GBP
$2,761 USD
View
B+
Retailer 6
-
£2,230 GBP
€2,846 EUR
View
Most Expensive
B
NZ Jewellers
9a5ac9b6-24dc-42a5-a52f-fd65a3a50ce6 · Oct 30
£3,734 GBP
$5,003 USD
View
6 more retailers have this diamond
Prices start from £1,614 GBPSave up to £2,120 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
£1,614 GBP