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Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

ID • I/SI1 • GIA 5553439824

Certificate GIA 5553439824

Diamond specifications and retailer prices

From £5,627 GBP
$7,540 USD
As of November 1, 2026
Save £4,150 GBP (42%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £9,777 GBP at MOH London · As of November 1, 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 I 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 5553439824. Listed at 15 retailers as of November 1, 2026, with prices from £5,627 to £9,777, a £4,150 spread on the same certified stone. MOH London lists it at £9,777. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5553439824
Dimensions11.24 × 5.92 × 3.77 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Cavity, Natural, Extra Facet
Top View
11.24 mm5.92 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5553439824
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.7%

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 1
Current: £9,777 GBP|Low: £5,627 GBP|High: £9,895 GBP|Avg: £7,224 GBP|-0.1%
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 2, 2026
Retailer 3£5,627 GBP
Retailer 13£6,125 GBP
Retailer 9£6,167 GBP
Retailer 10£6,520 GBP
Retailer 7£6,851 GBP
Retailer 8£7,021 GBP
Retailer 14£7,048 GBP
Retailer 11£7,272 GBP
Retailer 4£7,478 GBP
Retailer 6£7,478 GBP
Retailer 12£7,668 GBP
Retailer 5£7,725 GBP
Retailer 2£7,854 GBP
MOH London£9,777 GBP

31 data points across 14 retailers

15 retailers£5,627 GBP to £9,777 GBP

B+
Cheapest Retailer
-
£5,627 GBP
$7,540 USD
B+
Retailer 2
-
£6,125 GBP
$8,207 USD
View
B+
Retailer 3
-
£6,167 GBP
CA$11,477 CAD
View
B
Retailer 4
-
£6,520 GBP
$8,736 USD
View
B
Retailer 5
-
£6,851 GBP
View
B
Retailer 6
-
£6,964 GBP
CA$12,960 CAD
View
B
Retailer 7
-
£7,021 GBP
$9,408 USD
View
B
Retailer 8
-
£7,048 GBP
$9,444 USD
View
B
Retailer 9
-
£7,272 GBP
$9,744 USD
View
B
Retailer 10
-
£7,478 GBP
$10,020 USD
View
B
Retailer 11
-
£7,478 GBP
$10,020 USD
View
B
Retailer 12
-
£7,668 GBP
$10,275 USD
View
B
Retailer 13
-
£7,725 GBP
$10,350 USD
View
B
Retailer 14
-
£7,854 GBP
€10,022 EUR
View
Most Expensive
B
MOH London
E5DF95E55 · Nov 1
£9,777 GBP
View
14 more retailers have this diamond
Prices start from £5,627 GBPSave up to £4,150 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
£5,627 GBP