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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555718804

Certificate GIA 6555718804

Diamond specifications and retailer prices

From £6,832 GBP
As of November 1, 2026
Save £6,269 GBP (48%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: £13,101 GBP at NZ Jewellers · As of November 3, 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 D 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 6555718804. Listed at 31 retailers as of November 1, 2026, with prices from £6,832 to £13,101, a £6,269 spread on the same certified stone. NZ Jewellers lists it at £13,101. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555718804
Dimensions10.91 × 5.92 × 3.77 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
10.91 mm5.92 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555718804
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 63.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £13,101 GBP|Low: £6,264 GBP|High: £13,101 GBP|Avg: £8,742 GBP
NZ Jewellers
Retailer 2
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Retailer 29
November 5, 2026
Retailer 28£6,832 GBP
Retailer 23£6,989 GBP
Retailer 16£7,023 GBP
Retailer 12£7,284 GBP
Retailer 4£7,294 GBP
Retailer 17£7,497 GBP
Retailer 27£7,516 GBP
Retailer 10£7,730 GBP
Retailer 15£7,766 GBP
Retailer 11£7,861 GBP
Retailer 29£7,861 GBP
Retailer 18£8,377 GBP
Retailer 19£8,386 GBP
Retailer 2£8,411 GBP
Retailer 3£8,516 GBP
Retailer 26£8,539 GBP
Retailer 14£8,647 GBP
Retailer 9£8,694 GBP
Retailer 5£8,769 GBP
Retailer 20£8,837 GBP
Retailer 22£8,901 GBP
Retailer 21£9,343 GBP
Retailer 7£9,365 GBP
Retailer 8£9,576 GBP
Retailer 6£9,826 GBP
Retailer 24£9,901 GBP
Retailer 25£11,548 GBP
Retailer 13£12,244 GBP
NZ Jewellers£13,101 GBP

38 data points across 29 retailers

31 retailers£6,832 GBP to £13,101 GBP

Retailer 1
-
£5,651 GBP
Price last confirmed 43 days ago
A
Retailer 2
-
£6,832 GBP
View
A
Retailer 3
-
£6,989 GBP
View
A
Retailer 4
-
£7,023 GBP
View
B+
Retailer 5
-
£7,284 GBP
View
B+
Retailer 6
-
£7,294 GBP
View
B+
Retailer 7
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£7,379 GBP
View
B+
Retailer 8
-
£7,497 GBP
View
B+
Retailer 9
-
£7,516 GBP
View
B+
Retailer 10
-
£7,730 GBP
View
B+
Retailer 11
-
£7,766 GBP
View
Retailer 12
-
£7,861 GBP
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£7,861 GBP
View
Final sale: no returns
B+
Retailer 14
-
£8,377 GBP
View
B+
Retailer 15
-
£8,386 GBP
View
B+
Retailer 16
-
£8,411 GBP
View
B+
Retailer 17
-
£8,516 GBP
View
Retailer 18
-
£8,539 GBP
View
Price last confirmed 15 days ago
B+
Retailer 19
-
£8,647 GBP
View
B+
Retailer 20
-
£8,694 GBP
View
B+
Retailer 21
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£8,769 GBP
View
Retailer 22
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£8,802 GBP
View
Price last confirmed 67 days ago
Retailer 23
-
£8,837 GBP
View
Price last confirmed 24 days ago
B
Retailer 24
-
£9,343 GBP
View
B
Retailer 25
-
£9,365 GBP
View
B
Retailer 26
-
£9,576 GBP
View
B+
Retailer 27
-
£9,826 GBP
View
B+
Retailer 28
-
£9,901 GBP
View
B
Retailer 29
-
£11,548 GBP
View
B
Retailer 30
-
£12,244 GBP
View
Most Expensive
B
NZ Jewellers
9010dca9-b235-4b2b-8fda-183916b6f45c · Nov 3
£13,101 GBP
$17,536 USD
View
30 more retailers have this diamond
Prices start from £6,832 GBPSave up to £6,269 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.

A
1.50ct Marquise
£6,832 GBP