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Round|Natural|IGI

1.50ct H IF Round Natural Diamond

EX • H/IF • IGI 665427838

Shape and cutting style on the report: Round brilliant

Certificate IGI 665427838

Diamond specifications and retailer prices

From £4,325 GBP
As of November 5, 2026
Save £5,826 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £10,151 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 665427838. Listed at 17 retailers as of November 5, 2026, with prices from £4,325 to £10,151, a £5,826 spread on the same certified stone. Diamond Quarter lists it at £10,151. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
H
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 665427838
Dimensions7.31 × 7.25 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.31 mm7.25 mm1.50 ctH / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 665427838
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

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 5
Current: £5,238 GBP|Low: £4,325 GBP|High: £9,321 GBP|Avg: £5,789 GBP|-4.5%
Retailer 1
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
November 6, 2026
Retailer 11£4,325 GBP
Retailer 14£4,588 GBP
Retailer 4£4,860 GBP
Retailer 6£5,144 GBP
Retailer 8£5,144 GBP
Retailer 10£5,145 GBP
Retailer 15£5,149 GBP
Retailer 1£5,238 GBP
Retailer 3£5,572 GBP
Retailer 5£5,659 GBP
Retailer 7£5,694 GBP
Retailer 12£6,049 GBP
Retailer 2£6,430 GBP
Retailer 9£6,799 GBP
Retailer 13£7,746 GBP
Retailer 16£9,321 GBP

25 data points across 16 retailers

17 retailers£4,325 GBP to £10,151 GBP

A
Cheapest Retailer
-
£4,325 GBP
A
Retailer 2
-
£4,588 GBP
View
A
Retailer 3
-
£4,860 GBP
View
Retailer 4
-
£5,144 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£5,144 GBP
View
Final sale: no returns
A
Retailer 6
-
£5,145 GBP
View
A
Retailer 7
-
£5,149 GBP
View
A
Retailer 8
-
£5,238 GBP
View
A
Retailer 9
-
£5,572 GBP
View
A
Retailer 10
-
£5,659 GBP
View
A
Retailer 11
-
£5,694 GBP
View
A
Retailer 12
-
£6,049 GBP
View
B+
Retailer 13
-
£6,430 GBP
View
B+
Retailer 14
-
£6,799 GBP
View
B+
Retailer 15
-
£7,746 GBP
View
B
Retailer 16
-
£9,321 GBP
View
Most Expensive
B
Diamond Quarter
1.5IFH663891A8N · Nov 5
£10,151 GBP
View
16 more retailers have this diamond
Prices start from £4,325 GBPSave up to £5,826 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
£4,325 GBP