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Marquise|Natural|GIA

1.50ct K SI1 Marquise Natural Diamond

GD • K/SI1 • GIA 5242078709

Certificate GIA 5242078709

Diamond specifications and retailer prices

From £3,967 GBP
As of November 5, 2026
Save £4,274 GBP (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £8,241 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5242078709. Listed at 14 retailers as of November 5, 2026, with prices from £3,967 to £8,241, a £4,274 spread on the same certified stone. NZ Jewellers lists it at £8,241. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.41°
OriginNatural
Grading LabGIA
CertificateGIA 5242078709
Dimensions11.23 × 5.92 × 3.59 mm
L/W Ratio1.90
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
11.23 mm5.92 mm1.50 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242078709
Side View
Table 54.0%CrownGirdle: VTK-ETKPavilion 35.41°Culet: NoneDepth 60.6%

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 5
Current: £8,241 GBP|Low: £2,878 GBP|High: £8,241 GBP|Avg: £4,681 GBP|+22.4%
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
November 6, 2026
Retailer 5£2,878 GBP
Retailer 8£3,486 GBP
Retailer 7£3,697 GBP
Retailer 4£3,910 GBP
Retailer 6£3,960 GBP
Retailer 14£3,967 GBP
Retailer 3£4,081 GBP
Retailer 15£4,262 GBP
Retailer 11£4,589 GBP
Retailer 16£4,699 GBP
Retailer 9£4,725 GBP
Retailer 13£4,753 GBP
Retailer 2£5,109 GBP
Retailer 12£7,211 GBP
Retailer 10£7,240 GBP
NZ Jewellers£8,241 GBP

28 data points across 16 retailers

14 retailers£3,967 GBP to £8,241 GBP

Retailer 1
-
£2,878 GBP
Price last confirmed 21 days ago
Retailer 2
-
£3,697 GBP
View
Price last confirmed 23 days ago
Retailer 3
-
£3,960 GBP
View
Price last confirmed 26 days ago
B+
Retailer 4
-
£3,967 GBP
View
B+
Retailer 5
-
£4,081 GBP
View
B
Retailer 6
-
£4,262 GBP
View
B
Retailer 7
-
£4,589 GBP
View
B
Retailer 8
-
£4,699 GBP
View
B
Retailer 9
-
£4,725 GBP
View
B
Retailer 10
-
£4,753 GBP
View
B
Retailer 11
-
£5,109 GBP
View
C
Retailer 12
-
£7,211 GBP
View
C
Retailer 13
-
£7,240 GBP
View
Most Expensive
C
NZ Jewellers
37025887-5a4a-48e0-b13f-12c39a9fc033 · Nov 5
£8,241 GBP
$11,031 USD
View
13 more retailers have this diamond
Prices start from £3,967 GBPSave up to £4,274 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
£3,967 GBP