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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 6551670301

Certificate GIA 6551670301

Diamond specifications and retailer prices

From £8,496 GBP
CA$15,835 CAD
As of November 2, 2026
Save £4,676 GBP (35%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £13,172 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded E 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 6551670301. Listed at 9 retailers as of November 2, 2026, with prices from £8,496 to £13,172, a £4,676 spread on the same certified stone. MOH London lists it at £13,172. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551670301
Dimensions11.43 × 5.89 × 3.77 mm
L/W Ratio1.94
Top View
11.43 mm5.89 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551670301
Side View
Table 60.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 64.0%

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 2
Current: £13,172 GBP|Low: £7,143 GBP|High: £13,172 GBP|Avg: £9,234 GBP|+12.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9£7,186 GBP
Retailer 10£8,304 GBP
Retailer 4£8,496 GBP
Retailer 3£9,121 GBP
Retailer 6£9,365 GBP
Retailer 5£10,015 GBP
Retailer 8£10,445 GBP
Retailer 2£10,623 GBP
Retailer 7£11,094 GBP
MOH London£13,172 GBP

23 data points across 10 retailers

9 retailers£8,496 GBP to £13,172 GBP

Retailer 1
-
£8,304 GBP
A$17,144 AUD
Price last confirmed 30 days ago
B+
Retailer 2
-
£8,496 GBP
CA$15,835 CAD
View
B+
Retailer 3
-
£9,121 GBP
View
B+
Retailer 4
-
£9,365 GBP
$12,567 USD
View
B+
Retailer 5
-
£9,985 GBP
$13,399 USD
View
B+
Retailer 6
-
£10,015 GBP
$13,440 USD
View
B
Retailer 7
-
£10,445 GBP
$14,017 USD
View
B
Retailer 8
-
£10,623 GBP
€13,577 EUR
View
Most Expensive
B
MOH London
0F8B4BE1C · Nov 2
£13,172 GBP
View
8 more retailers have this diamond
Prices start from £8,496 GBPSave up to £4,676 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
£8,496 GBP