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Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2554551416

Certificate GIA 2554551416

Diamond specifications and retailer prices

From £7,052 GBP
$9,464 USD
As of November 2, 2026
Save £5,285 GBP (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £12,337 GBP at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554551416. Listed at 15 retailers as of November 1, 2026, with prices from £7,052 to £12,337, a £5,285 spread on the same certified stone. MOH London lists it at £12,337. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554551416
Dimensions11.26 × 5.93 × 3.75 mm
L/W Ratio1.90
Key to symbols
Feather, Crystal, Cloud, Needle, Natural
Top View
11.26 mm5.93 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2554551416
Side View
Table 59.0%CrownGirdle: STK-STKPavilionCulet: NoneDepth 63.2%

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 2
Current: £12,337 GBP|Low: £6,961 GBP|High: £12,486 GBP|Avg: £8,759 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7£7,052 GBP
Retailer 4£7,398 GBP
Retailer 10£7,401 GBP
Retailer 9£7,626 GBP
Retailer 5£7,899 GBP
Retailer 2£8,550 GBP
Retailer 8£9,219 GBP
Retailer 6£9,315 GBP
Retailer 11£9,315 GBP
Retailer 3£9,628 GBP
MOH London£12,337 GBP

40 data points across 11 retailers

15 retailers£7,052 GBP to £12,337 GBP

B+
Cheapest Retailer
-
£7,052 GBP
$9,464 USD
B+
Retailer 2
-
£7,398 GBP
$9,927 USD
View
B+
Retailer 3
-
£7,401 GBP
$9,932 USD
View
B+
Retailer 4
-
£7,492 GBP
A$15,468 AUD
View
B+
Retailer 5
-
£7,626 GBP
CA$14,214 CAD
View
B
Retailer 6
-
£7,899 GBP
$10,600 USD
View
Final sale: no returns
B+
Retailer 7
-
£8,550 GBP
View
Retailer 8
-
£8,558 GBP
$11,484 USD
View
Price last confirmed 43 days ago
B
Retailer 9
-
£9,219 GBP
$12,371 USD
View
B
Retailer 10
-
£9,315 GBP
$12,500 USD
View
B
Retailer 11
-
£9,315 GBP
$12,500 USD
View
B
Retailer 12
-
£9,628 GBP
$12,920 USD
View
Retailer 13
-
£9,875 GBP
$13,251 USD
View
Price last confirmed 44 days ago
Retailer 14
-
£9,875 GBP
$13,251 USD
View
Price last confirmed 48 days ago
Most Expensive
B
MOH London
C3DA0E18E · Nov 1
£12,337 GBP
View
14 more retailers have this diamond
Prices start from £7,052 GBPSave up to £5,285 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
£7,052 GBP