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Marquise|Natural|GIA

1.50ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 1457090445

Certificate GIA 1457090445

Diamond specifications and retailer prices

From £8,005 GBP
As of November 6, 2026
Save £6,673 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £14,678 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 F 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 1457090445. Listed at 12 retailers as of November 5, 2026, with prices from £8,005 to £14,678, a £6,673 spread on the same certified stone. NZ Jewellers lists it at £14,678. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1457090445
Dimensions11.68 × 6.07 × 3.50 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Cert comments
Clouds are not shown. Pinpoints are not shown.
Top View
11.68 mm6.07 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1457090445
Side View
Table 59.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 57.6%

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: £9,800 GBP|Low: £8,005 GBP|High: £13,919 GBP|Avg: £10,208 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7£8,005 GBP
Retailer 5£8,787 GBP
Retailer 2£9,529 GBP
Retailer 6£9,687 GBP
Retailer 1£9,800 GBP
Retailer 4£11,051 GBP
Retailer 3£13,717 GBP

43 data points across 7 retailers

12 retailers£8,005 GBP to £14,678 GBP

B+
Cheapest Retailer
-
£8,005 GBP
B
Retailer 2
-
£8,251 GBP
View
B+
Retailer 3
-
£8,692 GBP
View
B+
Retailer 4
-
£8,787 GBP
View
Final sale: no returns
B+
Retailer 5
-
£9,529 GBP
View
B
Retailer 6
-
£9,541 GBP
View
B
Retailer 7
-
£9,687 GBP
View
B
Retailer 8
-
£9,800 GBP
View
B
Retailer 9
-
£11,008 GBP
View
B
Retailer 10
-
£11,051 GBP
View
B
Retailer 11
-
£13,717 GBP
View
Most Expensive
B
NZ Jewellers
509fd407-2f62-48bc-9d7b-a8d631103646 · Nov 5
£14,678 GBP
$19,646 USD
View
11 more retailers have this diamond
Prices start from £8,005 GBPSave up to £6,673 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
£8,005 GBP