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Marquise|Natural|GIA

1.50ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 5543781996

Certificate GIA 5543781996

Diamond specifications and retailer prices

From £3,978 GBP
As of November 4, 2026
Save £4,443 GBP (53%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £8,421 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5543781996. Listed at 13 retailers as of November 4, 2026, with prices from £3,978 to £8,421, a £4,443 spread on the same certified stone. NZ Jewellers lists it at £8,421. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5543781996
Dimensions11.62 × 5.86 × 3.62 mm
L/W Ratio1.98
Top View
11.62 mm5.86 mm1.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5543781996
Side View
Table 55.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 61.8%

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 4
Current: £5,017 GBP|Low: £3,978 GBP|High: £7,507 GBP|Avg: £4,943 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£3,978 GBP
Retailer 9£4,069 GBP
Retailer 5£4,245 GBP
Retailer 7£4,561 GBP
Retailer 8£4,561 GBP
Retailer 3£4,782 GBP
Retailer 1£5,017 GBP
Retailer 2£5,170 GBP
Retailer 4£7,398 GBP

41 data points across 9 retailers

13 retailers£3,978 GBP to £8,421 GBP

B+
Cheapest Retailer
-
£3,978 GBP
B+
Retailer 2
-
£4,069 GBP
View
B+
Retailer 3
-
£4,245 GBP
View
B+
Retailer 4
-
£4,561 GBP
View
B+
Retailer 5
-
£4,561 GBP
View
Retailer 6
-
£4,561 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£4,782 GBP
View
B
Retailer 8
-
£5,017 GBP
View
B
Retailer 9
-
£5,170 GBP
View
B
Retailer 10
-
£5,263 GBP
View
Retailer 11
-
£5,550 GBP
View
Price last confirmed 15 days ago
B
Retailer 12
-
£7,398 GBP
View
Most Expensive
C
NZ Jewellers
c7273e29-e2d6-4081-83d6-91e8eda163a9 · Nov 5
£8,421 GBP
$11,271 USD
View
12 more retailers have this diamond
Prices start from £3,978 GBPSave up to £4,443 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
£3,978 GBP