CaratHunter
Plans
Round|Natural|GIA

1.50ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6452477908

Certificate GIA 6452477908

Diamond specifications and retailer prices

From £3,930 GBP
As of November 6, 2026
Save £4,857 GBP (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £8,787 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6452477908. Listed at 23 retailers as of November 5, 2026, with prices from £3,930 to £8,787, a £4,857 spread on the same certified stone. Diamond Quarter lists it at £8,787. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6452477908
Dimensions7.33 × 7.28 × 4.51 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.33 mm7.28 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452477908
Side View
Table 62.0%Crown 33°Girdle: ThickPavilion 41.6°Culet: NoneDepth 61.7%

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 6
Current: £5,786 GBP|Low: £3,930 GBP|High: £8,780 GBP|Avg: £5,492 GBP|-0.8%
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
Retailer 17
Retailer 18
November 6, 2026
Retailer 15£3,930 GBP
Retailer 4£4,162 GBP
Retailer 9£4,389 GBP
Retailer 6£4,423 GBP
Retailer 16£4,684 GBP
Retailer 2£4,756 GBP
Retailer 8£4,756 GBP
Retailer 17£4,756 GBP
Retailer 11£4,952 GBP
Retailer 3£5,095 GBP
Retailer 5£5,488 GBP
Retailer 10£5,656 GBP
Retailer 14£5,717 GBP
Retailer 1£5,786 GBP
Retailer 18£5,786 GBP
Retailer 12£6,405 GBP
Retailer 13£7,714 GBP
Retailer 7£8,780 GBP

34 data points across 18 retailers

23 retailers£3,930 GBP to £8,787 GBP

A
Cheapest Retailer
-
£3,930 GBP
Retailer 2
-
£4,085 GBP
View
Price last confirmed 82 days ago
B+
Retailer 3
-
£4,148 GBP
View
B+
Retailer 4
-
£4,162 GBP
View
B+
Retailer 5
-
£4,389 GBP
View
Final sale: no returns
B+
Retailer 6
-
£4,423 GBP
View
B+
Retailer 7
-
£4,684 GBP
View
B+
Retailer 8
-
£4,756 GBP
View
Retailer 9
-
£4,756 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£4,756 GBP
View
B+
Retailer 11
-
£4,952 GBP
View
Retailer 12
-
£5,095 GBP
View
Price last confirmed 15 days ago
B+
Retailer 13
-
£5,219 GBP
View
B
Retailer 14
-
£5,371 GBP
View
B
Retailer 15
-
£5,488 GBP
View
B+
Retailer 16
-
£5,656 GBP
View
B+
Retailer 17
-
£5,717 GBP
View
Retailer 18
-
£5,786 GBP
View
Price last confirmed 14 days ago
B+
Retailer 19
-
£5,786 GBP
View
B
Retailer 20
-
£6,405 GBP
View
B
Retailer 21
-
£7,714 GBP
View
B
Retailer 22
-
£8,780 GBP
View
Most Expensive
B
Diamond Quarter
1.5SI1H6408683CN · Nov 5
£8,787 GBP
View
22 more retailers have this diamond
Prices start from £3,930 GBPSave up to £4,857 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
£3,930 GBP