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Marquise|Natural|GIA

1.50ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1558626518

Certificate GIA 1558626518

Diamond specifications and retailer prices

From £5,261 GBP
$7,060 USD
As of November 1, 2026
Save £6,635 GBP (56%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £11,896 GBP at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1558626518. Listed at 13 retailers as of October 30, 2026, with prices from £5,261 to £11,896, a £6,635 spread on the same certified stone. NZ Jewellers lists it at £11,896. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.21°
Pavilion angle42.73°
OriginNatural
Grading LabGIA
CertificateGIA 1558626518
Dimensions10.66 × 6.03 × 3.95 mm
L/W Ratio1.77
Girdle conditionVery Thick
Culet sizeNone
Key to symbols
Feather, Cavity, Cloud, Needle, Indented Natural
Top View
10.66 mm6.03 mm1.50 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558626518
Side View
Table 67.0%Crown 38.21°Girdle: SLI-VTKPavilion 42.73°Culet: NDepth 65.5%

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 1
Current: £11,896 GBP|Low: £5,261 GBP|High: £11,896 GBP|Avg: £7,330 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
November 2, 2026
Retailer 8£5,261 GBP
Retailer 12£5,570 GBP
Retailer 11£5,924 GBP
Retailer 10£5,947 GBP
Retailer 3£5,948 GBP
Retailer 7£6,184 GBP
Retailer 4£6,444 GBP
Retailer 13£6,543 GBP
Retailer 9£7,113 GBP
Retailer 5£7,435 GBP
Retailer 2£7,769 GBP
Retailer 6£9,913 GBP
NZ Jewellers£11,896 GBP

32 data points across 13 retailers

13 retailers£5,261 GBP to £11,896 GBP

B+
Cheapest Retailer
-
£5,261 GBP
$7,060 USD
Retailer 2
-
£5,570 GBP
$7,474 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
£5,924 GBP
$7,950 USD
View
B+
Retailer 4
-
£5,947 GBP
$7,981 USD
View
Final sale: no returns
B+
Retailer 5
-
£5,948 GBP
$7,982 USD
View
B+
Retailer 6
-
£6,184 GBP
$8,298 USD
View
B
Retailer 7
-
£6,444 GBP
$8,647 USD
View
B
Retailer 8
-
£6,543 GBP
$8,780 USD
View
B
Retailer 9
-
£7,113 GBP
$9,546 USD
View
B
Retailer 10
-
£7,435 GBP
$9,977 USD
View
B
Retailer 11
-
£7,769 GBP
€9,929 EUR
View
B
Retailer 12
-
£9,913 GBP
View
Most Expensive
C
NZ Jewellers
420b6be4-ce89-46d9-b133-d4011d17c83a · Oct 30
£11,896 GBP
$15,964 USD
View
12 more retailers have this diamond
Prices start from £5,261 GBPSave up to £6,635 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
£5,261 GBP