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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 6545615648

Certificate GIA 6545615648

Diamond specifications and retailer prices

From £4,321 GBP
As of November 5, 2026
Save £4,825 GBP (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £9,145 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6545615648. Listed at 17 retailers as of November 5, 2026, with prices from £4,321 to £9,145, a £4,825 spread on the same certified stone. NZ Jewellers lists it at £9,145. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle44.06°
Pavilion angle39.52°
OriginNatural
Grading LabGIA
CertificateGIA 6545615648
Dimensions10.49 × 5.73 × 3.82 mm
L/W Ratio1.83
Top View
10.49 mm5.73 mm1.50 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6545615648
Side View
Table 60.0%Crown 44.06°Girdle: THN-VTKPavilion 39.52°Culet: NoneDepth 66.7%

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: Nov 5
Current: £9,145 GBP|Low: £4,321 GBP|High: £9,553 GBP|Avg: £6,104 GBP|-4.3%
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
November 6, 2026
Retailer 4£4,321 GBP
Retailer 3£4,386 GBP
Retailer 6£4,954 GBP
Retailer 13£5,030 GBP
Retailer 10£5,105 GBP
Retailer 9£5,233 GBP
Retailer 2£5,366 GBP
Retailer 8£5,507 GBP
Retailer 15£5,716 GBP
Retailer 7£5,768 GBP
Retailer 14£5,768 GBP
Retailer 5£5,950 GBP
Retailer 16£5,962 GBP
Retailer 11£6,672 GBP
Retailer 12£7,600 GBP
NZ Jewellers£9,145 GBP

34 data points across 16 retailers

17 retailers£4,321 GBP to £9,145 GBP

B+
Cheapest Retailer
-
£4,321 GBP
B+
Retailer 2
-
£4,386 GBP
View
B
Retailer 3
-
£4,954 GBP
View
B
Retailer 4
-
£5,030 GBP
View
B
Retailer 5
-
£5,105 GBP
View
B
Retailer 6
-
£5,233 GBP
View
B
Retailer 7
-
£5,366 GBP
View
Retailer 8
-
£5,507 GBP
View
Price last confirmed 16 days ago
B
Retailer 9
-
£5,716 GBP
View
B
Retailer 10
-
£5,768 GBP
View
B
Retailer 11
-
£5,768 GBP
View
B
Retailer 12
-
£5,950 GBP
View
B
Retailer 13
-
£5,962 GBP
View
Retailer 14
-
£6,294 GBP
View
Price last confirmed 15 days ago
B
Retailer 15
-
£6,672 GBP
View
B
Retailer 16
-
£7,600 GBP
View
Most Expensive
C
NZ Jewellers
a7829865-7af9-4f60-8bc9-b66253d97315 · Nov 5
£9,145 GBP
$12,241 USD
View
16 more retailers have this diamond
Prices start from £4,321 GBPSave up to £4,825 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 Marquise
£4,321 GBP