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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7556372547

Certificate GIA 7556372547

Diamond specifications and retailer prices

From £6,457 GBP
As of November 6, 2026
Save £1,732 GBP (21%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £8,189 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

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 7556372547. Listed at 8 retailers as of November 5, 2026, with prices from £6,457 to £8,189, a £1,732 spread on the same certified stone. Blue Nile lists it at £8,189. 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
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556372547
Dimensions11.44 × 5.93 × 3.75 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Twinning Wisp, Needle
Top View
11.44 mm5.93 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7556372547
Side View
Table 61.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 63.3%

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 6
Current: £8,189 GBP|Low: £6,268 GBP|High: £8,458 GBP|Avg: £7,225 GBP|-3.2%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£6,457 GBP
Retailer 4£6,544 GBP
Retailer 3£6,960 GBP
Retailer 5£7,009 GBP
Retailer 6£7,308 GBP
Retailer 7£7,517 GBP
Blue Nile£8,189 GBP

45 data points across 7 retailers

8 retailers£6,457 GBP to £8,189 GBP

A
Cheapest Retailer
-
£6,457 GBP
A
Retailer 2
-
£6,544 GBP
View
A
Retailer 3
-
£6,960 GBP
View
B+
Retailer 4
-
£7,009 GBP
View
B+
Retailer 5
-
£7,308 GBP
View
Final sale: no returns
B+
Retailer 6
-
£7,517 GBP
View
B+
Retailer 7
-
£7,697 GBP
View
Most Expensive
B+
Blue Nile
29351770 · Nov 5
£8,189 GBP
$10,961 USD
View
7 more retailers have this diamond
Prices start from £6,457 GBPSave up to £1,732 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
£6,457 GBP