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Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2527673497

Certificate GIA 2527673497

Diamond specifications and retailer prices

From £3,481 GBP
As of November 6, 2026
Save £4,062 GBP (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £7,543 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2527673497. Listed at 25 retailers as of November 5, 2026, with prices from £3,481 to £7,543, a £4,062 spread on the same certified stone. NZ Jewellers lists it at £7,543. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2527673497
Dimensions7.31 × 7.26 × 4.51 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
7.31 mm7.26 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2527673497
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.8%

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 6
Current: £7,543 GBP|Low: £3,318 GBP|High: £7,543 GBP|Avg: £4,762 GBP|+4.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 6, 2026
Retailer 10£3,481 GBP
Retailer 2£3,513 GBP
Retailer 16£3,818 GBP
Retailer 18£3,860 GBP
Retailer 9£3,933 GBP
Retailer 5£4,148 GBP
Retailer 8£4,163 GBP
Retailer 4£4,202 GBP
Retailer 20£4,327 GBP
Retailer 15£4,330 GBP
Retailer 6£4,453 GBP
Retailer 7£4,510 GBP
Retailer 23£4,510 GBP
Retailer 13£4,613 GBP
Retailer 3£4,626 GBP
Retailer 11£4,660 GBP
Retailer 19£4,792 GBP
Retailer 12£5,204 GBP
Retailer 17£5,502 GBP
Retailer 14£6,610 GBP
Retailer 21£6,626 GBP
Retailer 22£6,794 GBP
NZ Jewellers£7,543 GBP

17 data points across 23 retailers

25 retailers£3,481 GBP to £7,543 GBP

A
Cheapest Retailer
-
£3,481 GBP
A
Retailer 2
-
£3,513 GBP
View
A
Retailer 3
-
£3,792 GBP
View
Retailer 4
-
£3,818 GBP
View
Price last confirmed 10 days ago
A
Retailer 5
-
£3,860 GBP
View
B+
Retailer 6
-
£3,933 GBP
View
A
Retailer 7
-
£4,148 GBP
View
A
Retailer 8
-
£4,163 GBP
View
Final sale: no returns
B+
Retailer 9
-
£4,202 GBP
View
B+
Retailer 10
-
£4,327 GBP
View
Retailer 11
-
£4,330 GBP
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£4,453 GBP
View
Retailer 13
-
£4,458 GBP
View
Price last confirmed 28 days ago
B+
Retailer 14
-
£4,510 GBP
View
B+
Retailer 15
-
£4,510 GBP
View
B+
Retailer 16
-
£4,613 GBP
View
B+
Retailer 17
-
£4,626 GBP
View
B+
Retailer 18
-
£4,660 GBP
View
B+
Retailer 19
-
£4,792 GBP
View
B
Retailer 20
-
£5,204 GBP
View
B
Retailer 21
-
£5,502 GBP
View
B
Retailer 22
-
£6,610 GBP
View
B
Retailer 23
-
£6,626 GBP
View
B
Retailer 24
-
£6,794 GBP
View
Most Expensive
B
NZ Jewellers
0328da95-e06d-4905-b7d6-a1d383768632 · Nov 5
£7,543 GBP
$10,096 USD
View
24 more retailers have this diamond
Prices start from £3,481 GBPSave up to £4,062 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
£3,481 GBP