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Marquise|Natural|GIA

1.50ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 1232882970

Certificate GIA 1232882970

Diamond specifications and retailer prices

From £4,250 GBP
As of November 6, 2026
Save £4,754 GBP (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £9,004 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1232882970. Listed at 20 retailers as of November 5, 2026, with prices from £4,250 to £9,004, a £4,754 spread on the same certified stone. NZ Jewellers lists it at £9,004. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.74°
OriginNatural
Grading LabGIA
CertificateGIA 1232882970
Dimensions11.84 × 5.72 × 3.73 mm
L/W Ratio2.07
Key to symbols
Crystal, Feather, Needle, Natural
Top View
11.84 mm5.72 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1232882970
Side View
Table 58.0%CrownGirdle: STK-VTKPavilion 39.74°Culet: NoneDepth 65.2%

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: £9,004 GBP|Low: £4,250 GBP|High: £9,004 GBP|Avg: £5,557 GBP
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
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 8£4,250 GBP
Retailer 9£4,253 GBP
Retailer 17£4,502 GBP
Retailer 6£4,531 GBP
Retailer 7£4,539 GBP
Retailer 3£4,877 GBP
Retailer 18£4,938 GBP
Retailer 16£4,953 GBP
Retailer 11£5,066 GBP
Retailer 13£5,112 GBP
Retailer 2£5,222 GBP
Retailer 19£5,508 GBP
Retailer 4£5,627 GBP
Retailer 12£5,849 GBP
Retailer 10£5,933 GBP
Retailer 14£6,569 GBP
Retailer 15£7,482 GBP
Retailer 5£7,884 GBP
NZ Jewellers£9,004 GBP

36 data points across 19 retailers

20 retailers£4,250 GBP to £9,004 GBP

B+
Cheapest Retailer
-
£4,250 GBP
B+
Retailer 2
-
£4,253 GBP
View
Retailer 3
-
£4,502 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£4,531 GBP
View
B+
Retailer 5
-
£4,539 GBP
View
B+
Retailer 6
-
£4,802 GBP
View
B
Retailer 7
-
£4,877 GBP
View
B
Retailer 8
-
£4,938 GBP
View
B
Retailer 9
-
£4,953 GBP
View
B
Retailer 10
-
£5,066 GBP
View
B
Retailer 11
-
£5,112 GBP
View
B
Retailer 12
-
£5,222 GBP
View
B
Retailer 13
-
£5,508 GBP
View
B
Retailer 14
-
£5,627 GBP
View
B
Retailer 15
-
£5,849 GBP
View
Retailer 16
-
£5,933 GBP
View
Price last confirmed 15 days ago
B
Retailer 17
-
£6,569 GBP
View
B
Retailer 18
-
£7,482 GBP
View
B
Retailer 19
-
£7,884 GBP
View
Most Expensive
B
NZ Jewellers
6bceaecc-c468-4a9f-91af-66ce2ac66a01 · Nov 5
£9,004 GBP
$12,052 USD
View
19 more retailers have this diamond
Prices start from £4,250 GBPSave up to £4,754 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
£4,250 GBP