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Round|Natural|GIA

1.50ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1367318871

Certificate GIA 1367318871

Diamond specifications and retailer prices

From £3,952 GBP
$5,295 USD
As of October 30, 2026
Save £4,415 GBP (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £8,366 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1367318871. Listed at 20 retailers as of October 30, 2026, with prices from £3,952 to £8,366, a £4,415 spread on the same certified stone. NZ Jewellers lists it at £8,366. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1367318871
Dimensions7.30 × 7.26 × 4.55 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.30 mm7.26 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1367318871
Side View
Table 56.0%Crown 36.5°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £6,146 GBP|Low: £3,952 GBP|High: £7,459 GBP|Avg: £5,126 GBP|+1.9%
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
October 31, 2026
Retailer 4£3,952 GBP
Retailer 12£3,959 GBP
Retailer 14£4,224 GBP
Retailer 9£4,422 GBP
Retailer 2£4,532 GBP
Retailer 3£4,532 GBP
Retailer 13£4,532 GBP
Retailer 5£4,797 GBP
Retailer 6£4,821 GBP
Retailer 15£4,882 GBP
Retailer 7£5,229 GBP
Retailer 10£5,481 GBP
Retailer 8£5,993 GBP
Retailer 1£6,146 GBP
Retailer 11£7,409 GBP

34 data points across 15 retailers

20 retailers£3,952 GBP to £8,366 GBP

B+
Cheapest Retailer
-
£3,952 GBP
$5,295 USD
B+
Retailer 2
-
£3,959 GBP
$5,305 USD
View
B
Retailer 3
-
£4,084 GBP
$5,472 USD
View
B
Retailer 4
-
£4,224 GBP
$5,660 USD
View
B+
Retailer 5
-
£4,422 GBP
View
B
Retailer 6
-
£4,532 GBP
$6,072 USD
View
B
Retailer 7
-
£4,532 GBP
$6,072 USD
View
B+
Retailer 8
-
£4,532 GBP
$6,072 USD
View
B
Retailer 9
-
£4,797 GBP
$6,427 USD
View
B
Retailer 10
-
£4,821 GBP
$6,460 USD
View
B
Retailer 11
-
£4,821 GBP
$6,460 USD
View
Retailer 12
-
£4,882 GBP
A$10,064 AUD
View
Price last confirmed 19 days ago
B
Retailer 13
-
£4,978 GBP
$6,670 USD
View
B
Retailer 14
-
£5,229 GBP
$7,006 USD
View
B
Retailer 15
-
£5,481 GBP
€6,994 EUR
View
Retailer 16
-
£5,515 GBP
$7,389 USD
View
Price last confirmed 8 days ago
B
Retailer 17
-
£5,993 GBP
View
B
Retailer 18
-
£6,146 GBP
ZAR 133,038 ZAR
View
B
Retailer 19
-
£7,409 GBP
View
Most Expensive
B
NZ Jewellers
9327b21a-3ec2-40d7-966f-d43c17bac7f0 · Oct 30
£8,366 GBP
$11,210 USD
View
19 more retailers have this diamond
Prices start from £3,952 GBPSave up to £4,415 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.

B+
1.50ct Round
£3,952 GBP