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1.50ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 754512323

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512323

Diamond specifications and retailer prices

From £2,110 GBP
₹269,274 INR
As of October 31, 2026
Save £2,455 GBP (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,565 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 754512323. Listed at 18 retailers as of October 30, 2026, with prices from £2,110 to £4,565, a £2,455 spread on the same certified stone. NZ Jewellers lists it at £4,565. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 754512323
Dimensions7.21 × 7.25 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.21 mm7.25 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 754512323
Side View
Table 57.0%Crown 36.3°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.4%

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: Oct 31
Current: £4,565 GBP|Low: £2,110 GBP|High: £4,710 GBP|Avg: £2,924 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 31, 2026
Retailer 2£2,110 GBP
Retailer 16£2,254 GBP
Retailer 7£2,326 GBP
Retailer 5£2,362 GBP
Retailer 8£2,418 GBP
Retailer 18£2,569 GBP
Retailer 6£2,620 GBP
Retailer 13£2,620 GBP
Retailer 4£2,666 GBP
Retailer 14£2,721 GBP
Retailer 15£2,728 GBP
Retailer 11£2,843 GBP
Retailer 10£3,023 GBP
Retailer 3£3,038 GBP
Retailer 12£3,068 GBP
Retailer 9£4,019 GBP
Retailer 17£4,388 GBP
NZ Jewellers£4,565 GBP

36 data points across 18 retailers

18 retailers£2,110 GBP to £4,565 GBP

A
Cheapest Retailer
-
£2,110 GBP
₹269,274 INR
A
Retailer 2
-
£2,254 GBP
$3,020 USD
View
A
Retailer 3
-
£2,326 GBP
$3,117 USD
View
A
Retailer 4
-
£2,362 GBP
SGD 4,276 SGD
View
A
Retailer 5
-
£2,418 GBP
$3,240 USD
View
Final sale: no returns
A
Retailer 6
-
£2,569 GBP
$3,442 USD
View
A
Retailer 7
-
£2,620 GBP
$3,511 USD
View
A
Retailer 8
-
£2,620 GBP
$3,511 USD
View
A
Retailer 9
-
£2,666 GBP
$3,572 USD
View
A
Retailer 10
-
£2,721 GBP
$3,646 USD
View
A
Retailer 11
-
£2,728 GBP
$3,656 USD
View
A
Retailer 12
-
£2,843 GBP
View
A
Retailer 13
-
£3,023 GBP
$4,051 USD
View
A
Retailer 14
-
£3,038 GBP
View
A
Retailer 15
-
£3,068 GBP
€3,915 EUR
View
B+
Retailer 16
-
£4,019 GBP
$5,386 USD
View
B+
Retailer 17
-
£4,388 GBP
View
Most Expensive
B+
NZ Jewellers
00c94c50-0d12-4257-bd7e-735e84b4e8fe · Oct 30
£4,565 GBP
$6,117 USD
View
17 more retailers have this diamond
Prices start from £2,110 GBPSave up to £2,455 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
1.50ct Round
£2,110 GBP