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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 1549494456

Certificate GIA 1549494456

Diamond specifications and retailer prices

From £8,634 GBP
As of November 6, 2026
Save £6,253 GBP (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £14,887 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549494456. Listed at 14 retailers as of November 4, 2026, with prices from £8,634 to £14,887, a £6,253 spread on the same certified stone. MOH London lists it at £14,887. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549494456
Dimensions11.44 × 5.88 × 3.74 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Cert comments
Pinpoints are not shown.
Top View
11.44 mm5.88 mm1.50 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549494456
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.6%

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: £14,887 GBP|Low: £8,634 GBP|High: £15,107 GBP|Avg: £11,090 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£8,634 GBP
Retailer 4£9,159 GBP
Retailer 5£10,195 GBP
Retailer 3£10,202 GBP
Retailer 8£10,354 GBP
Retailer 10£10,752 GBP
Retailer 9£10,825 GBP
Retailer 2£11,975 GBP
Retailer 7£13,540 GBP
MOH London£14,887 GBP

43 data points across 10 retailers

14 retailers£8,634 GBP to £14,887 GBP

B+
Cheapest Retailer
-
£8,634 GBP
B+
Retailer 2
-
£8,956 GBP
View
B+
Retailer 3
-
£9,092 GBP
View
B+
Retailer 4
-
£9,159 GBP
View
Final sale: no returns
B+
Retailer 5
-
£9,240 GBP
View
B+
Retailer 6
-
£10,195 GBP
View
B+
Retailer 7
-
£10,202 GBP
View
B+
Retailer 8
-
£10,354 GBP
View
B+
Retailer 9
-
£10,752 GBP
View
B
Retailer 10
-
£10,825 GBP
View
B
Retailer 11
-
£11,325 GBP
View
B
Retailer 12
-
£11,975 GBP
View
B
Retailer 13
-
£13,540 GBP
View
Most Expensive
B
MOH London
4652BB7B6 · Nov 4
£14,887 GBP
View
13 more retailers have this diamond
Prices start from £8,634 GBPSave up to £6,253 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
£8,634 GBP