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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2564054571

Certificate GIA 2564054571

Diamond specifications and retailer prices

From £4,025 GBP
As of November 6, 2026
Save £1,400 GBP (26%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £5,424 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 2564054571. Listed at 6 retailers as of November 6, 2026, with prices from £4,025 to £5,424, a £1,400 spread on the same certified stone. 77 Diamonds lists it at £5,424. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564054571
Dimensions11.95 × 6.01 × 3.50 mm
L/W Ratio1.99
Culet sizeVery Small
Key to symbols
Twinning Wisp, Feather, Cavity, Indented Natural, Natural
Top View
11.95 mm6.01 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564054571
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: Very SmallDepth 58.4%

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: £5,424 GBP|Low: £4,025 GBP|High: £5,478 GBP|Avg: £4,734 GBP|+7.6%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£4,025 GBP
Retailer 4£5,101 GBP
Retailer 3£5,320 GBP
77 Diamonds£5,424 GBP

45 data points across 4 retailers

6 retailers£4,025 GBP to £5,424 GBP

A
Cheapest Retailer
-
£4,025 GBP
B+
Retailer 2
-
£4,797 GBP
View
B+
Retailer 3
-
£5,068 GBP
View
B+
Retailer 4
-
£5,101 GBP
View
B+
Retailer 5
-
£5,320 GBP
View
Most Expensive
B+
77 Diamonds
MQCPDDXA4VGA · Nov 6
£5,424 GBP
View
5 more retailers have this diamond
Prices start from £4,025 GBPSave up to £1,400 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
£4,025 GBP