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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6565156521

Certificate GIA 6565156521

Diamond specifications and retailer prices

From £5,034 GBP
As of November 6, 2026
Save £3,490 GBP (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £8,524 GBP at MOH London · As of November 4, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565156521. Listed at 14 retailers as of November 4, 2026, with prices from £5,034 to £8,524, a £3,490 spread on the same certified stone. MOH London lists it at £8,524. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6565156521
Dimensions11.05 × 5.97 × 3.68 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Cavity, Pinpoint, Natural
Top View
11.05 mm5.97 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6565156521
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.6%

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 6
Current: £8,524 GBP|Low: £4,587 GBP|High: £8,650 GBP|Avg: £5,970 GBP|-1.3%
MOH London
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
November 6, 2026
Retailer 5£5,034 GBP
Retailer 9£5,151 GBP
Retailer 11£5,315 GBP
Retailer 8£5,641 GBP
Retailer 10£5,724 GBP
Retailer 7£5,786 GBP
Retailer 6£5,798 GBP
Retailer 12£5,928 GBP
Retailer 3£6,194 GBP
Retailer 4£6,194 GBP
Retailer 13£6,250 GBP
Retailer 14£6,395 GBP
Retailer 2£6,663 GBP
MOH London£8,524 GBP

36 data points across 14 retailers

14 retailers£5,034 GBP to £8,524 GBP

B+
Cheapest Retailer
-
£5,034 GBP
B
Retailer 2
-
£5,151 GBP
View
B
Retailer 3
-
£5,315 GBP
View
B
Retailer 4
-
£5,641 GBP
View
B
Retailer 5
-
£5,724 GBP
View
B+
Retailer 6
-
£5,786 GBP
View
B
Retailer 7
-
£5,798 GBP
View
B
Retailer 8
-
£5,928 GBP
View
B
Retailer 9
-
£6,194 GBP
View
B
Retailer 10
-
£6,194 GBP
View
B
Retailer 11
-
£6,250 GBP
View
B
Retailer 12
-
£6,395 GBP
View
B
Retailer 13
-
£6,663 GBP
View
Most Expensive
B
MOH London
33DFA88A3 · Nov 4
£8,524 GBP
View
13 more retailers have this diamond
Prices start from £5,034 GBPSave up to £3,490 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
£5,034 GBP