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Round|Natural|GIA

1.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6531235342

Certificate GIA 6531235342

Diamond specifications and retailer prices

From £3,453 GBP
$4,627 USD
As of October 30, 2026
Save £4,189 GBP (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £7,642 GBP at NZ Jewellers · As of October 27, 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 GIA 6531235342. Listed at 22 retailers as of October 27, 2026, with prices from £3,453 to £7,642, a £4,189 spread on the same certified stone. NZ Jewellers lists it at £7,642. 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
FluorescenceFaint
Crown angle34°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6531235342
Dimensions7.31 × 7.34 × 4.48 mm
L/W Ratio1.00
Girdle conditionFaceted
Key to symbols
Feather, Crystal, Needle, Natural
Top View
7.31 mm7.34 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531235342
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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: £7,642 GBP|Low: £3,152 GBP|High: £7,642 GBP|Avg: £4,480 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
Retailer 19
Retailer 20
Retailer 21
October 30, 2026
Retailer 14£3,152 GBP
Retailer 10£3,453 GBP
Retailer 7£3,508 GBP
Retailer 9£3,610 GBP
Retailer 11£3,656 GBP
Retailer 6£4,090 GBP
Retailer 8£4,139 GBP
Retailer 18£4,139 GBP
Retailer 19£4,139 GBP
Retailer 21£4,333 GBP
Retailer 15£4,354 GBP
Retailer 12£4,505 GBP
Retailer 3£4,627 GBP
Retailer 20£4,627 GBP
Retailer 2£4,718 GBP
Retailer 5£4,777 GBP
Retailer 16£4,777 GBP
Retailer 13£4,957 GBP
Retailer 4£6,620 GBP
Retailer 17£6,741 GBP
NZ Jewellers£7,642 GBP

32 data points across 21 retailers

22 retailers£3,453 GBP to £7,642 GBP

Retailer 1
-
£3,152 GBP
HK$33,000 HKD
Price last confirmed 51 days ago
A
Retailer 2
-
£3,453 GBP
$4,627 USD
View
Retailer 3
-
£3,508 GBP
$4,700 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
£3,610 GBP
$4,837 USD
View
A
Retailer 5
-
£3,656 GBP
$4,899 USD
View
A
Retailer 6
-
£3,760 GBP
A$7,752 AUD
View
B+
Retailer 7
-
£4,090 GBP
$5,481 USD
View
B+
Retailer 8
-
£4,139 GBP
$5,546 USD
View
B+
Retailer 9
-
£4,139 GBP
$5,546 USD
View
B+
Retailer 10
-
£4,139 GBP
$5,546 USD
View
B+
Retailer 11
-
£4,333 GBP
$5,806 USD
View
B+
Retailer 12
-
£4,354 GBP
View
Retailer 13
-
£4,505 GBP
$6,036 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
£4,627 GBP
$6,200 USD
View
B+
Retailer 15
-
£4,627 GBP
$6,200 USD
View
B+
Retailer 16
-
£4,718 GBP
€6,021 EUR
View
B+
Retailer 17
-
£4,777 GBP
$6,400 USD
View
B+
Retailer 18
-
£4,777 GBP
$6,400 USD
View
B+
Retailer 19
-
£4,957 GBP
View
B
Retailer 20
-
£6,620 GBP
$8,870 USD
View
B
Retailer 21
-
£6,741 GBP
View
Most Expensive
B
NZ Jewellers
6a24d490-60d2-49bc-afd6-38d392c3b7e6 · Oct 27
£7,642 GBP
$10,240 USD
View
21 more retailers have this diamond
Prices start from £3,453 GBPSave up to £4,189 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
£3,453 GBP