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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2556380273

Certificate GIA 2556380273

Diamond specifications and retailer prices

From £4,888 GBP
$6,549 USD
As of October 30, 2026
Save £3,779 GBP (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £8,667 GBP at MOH London · As of October 29, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556380273. Listed at 14 retailers as of October 29, 2026, with prices from £4,888 to £8,667, a £3,779 spread on the same certified stone. MOH London lists it at £8,667. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2556380273
Dimensions11.18 × 5.86 × 3.78 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Top View
11.18 mm5.86 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2556380273
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

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: Oct 30
Current: £8,667 GBP|Low: £4,741 GBP|High: £8,725 GBP|Avg: £5,954 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 18£4,888 GBP
Retailer 8£4,923 GBP
Retailer 10£5,030 GBP
Retailer 9£5,093 GBP
Retailer 4£5,173 GBP
Retailer 17£5,173 GBP
Retailer 3£5,216 GBP
Retailer 5£5,690 GBP
Retailer 11£5,838 GBP
Retailer 2£6,052 GBP
Retailer 13£6,187 GBP
Retailer 15£6,187 GBP
Retailer 14£6,389 GBP
Retailer 6£6,409 GBP
Retailer 16£6,466 GBP
Retailer 12£6,749 GBP
Retailer 7£6,813 GBP
MOH London£8,667 GBP

23 data points across 18 retailers

14 retailers£4,888 GBP to £8,667 GBP

B+
Cheapest Retailer
-
£4,888 GBP
$6,549 USD
B+
Retailer 2
-
£5,173 GBP
$6,931 USD
View
Final sale: no returns
Retailer 3
-
£5,173 GBP
$6,931 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
£5,216 GBP
$6,989 USD
View
B+
Retailer 5
-
£5,690 GBP
$7,624 USD
View
B+
Retailer 6
-
£5,838 GBP
View
B+
Retailer 7
-
£6,052 GBP
View
B
Retailer 8
-
£6,187 GBP
$8,290 USD
View
B
Retailer 9
-
£6,187 GBP
$8,290 USD
View
B
Retailer 10
-
£6,389 GBP
$8,560 USD
View
B
Retailer 11
-
£6,466 GBP
$8,664 USD
View
B
Retailer 12
-
£6,749 GBP
€8,612 EUR
View
Retailer 13
-
£6,813 GBP
$9,129 USD
View
Price last confirmed 19 days ago
Most Expensive
B
MOH London
1FA2D8523 · Oct 29
£8,667 GBP
View
13 more retailers have this diamond
Prices start from £4,888 GBPSave up to £3,779 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
£4,888 GBP