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Marquise|Natural|GIA

1.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1558587559

Certificate GIA 1558587559

Diamond specifications and retailer prices

From £5,408 GBP
As of November 6, 2026
Save £6,220 GBP (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £11,628 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558587559. Listed at 18 retailers as of November 5, 2026, with prices from £5,408 to £11,628, a £6,220 spread on the same certified stone. NZ Jewellers lists it at £11,628. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558587559
Dimensions11.11 × 5.94 × 3.79 mm
L/W Ratio1.87
Girdle conditionVery Thin to Very Thick
Key to symbols
Twinning Wisp, Feather, Cavity, Natural
Top View
11.11 mm5.94 mm1.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558587559
Side View
Table 60.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 63.8%

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: £11,628 GBP|Low: £5,479 GBP|High: £12,047 GBP|Avg: £7,362 GBP|-3.5%
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
November 6, 2026
Retailer 14£5,479 GBP
Retailer 2£5,496 GBP
Retailer 16£5,765 GBP
Retailer 15£5,814 GBP
Retailer 17£6,299 GBP
Retailer 8£6,386 GBP
Retailer 12£6,487 GBP
Retailer 3£6,557 GBP
Retailer 9£6,625 GBP
Retailer 10£6,699 GBP
Retailer 5£6,742 GBP
Retailer 4£6,971 GBP
Retailer 6£6,971 GBP
Retailer 11£7,202 GBP
Retailer 13£7,268 GBP
Retailer 7£10,011 GBP
NZ Jewellers£11,628 GBP

33 data points across 17 retailers

18 retailers£5,408 GBP to £11,628 GBP

B+
Cheapest Retailer
-
£5,408 GBP
B+
Retailer 2
-
£5,479 GBP
View
B+
Retailer 3
-
£5,496 GBP
View
B+
Retailer 4
-
£5,765 GBP
View
B+
Retailer 5
-
£5,814 GBP
View
Final sale: no returns
B+
Retailer 6
-
£6,299 GBP
View
B
Retailer 7
-
£6,386 GBP
View
B+
Retailer 8
-
£6,487 GBP
View
B
Retailer 9
-
£6,557 GBP
View
B
Retailer 10
-
£6,625 GBP
View
B+
Retailer 11
-
£6,699 GBP
View
B
Retailer 12
-
£6,742 GBP
View
B
Retailer 13
-
£6,971 GBP
View
B
Retailer 14
-
£6,971 GBP
View
B
Retailer 15
-
£7,202 GBP
View
B+
Retailer 16
-
£7,268 GBP
View
B
Retailer 17
-
£10,011 GBP
View
Most Expensive
B
NZ Jewellers
c1156e61-ffd4-437e-ac01-b8778420eda8 · Nov 5
£11,628 GBP
$15,564 USD
View
17 more retailers have this diamond
Prices start from £5,408 GBPSave up to £6,220 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
£5,408 GBP