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Marquise|Natural|GIA

1.51ct M SI2 Marquise Natural Diamond

EX • M/SI2 • GIA 2557986880

Certificate GIA 2557986880

Diamond specifications and retailer prices

From £1,422 GBP
As of November 6, 2026
Save £950 GBP (40%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,373 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557986880. Listed at 3 retailers as of November 6, 2026, with prices from £1,422 to £2,373, a £950 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,373. 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

1.51
Carat
M
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.97°
Pavilion angle39.13°
OriginNatural
Grading LabGIA
CertificateGIA 2557986880
Dimensions11.10 × 5.87 × 3.74 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.10 mm5.87 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557986880
Side View
Table 59.0%Crown 38.97°Girdle: STK-VTKPavilion 39.13°Culet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,422 GBP|Low: £1,135 GBP|High: £2,740 GBP|Avg: £1,807 GBP|-14.8%
Retailer 1
Retailer 2
Retailer 3
Wholesale Diamonds Direct
November 6, 2026
Retailer 3£1,135 GBP
Retailer 1£1,422 GBP
Retailer 2£1,832 GBP
Wholesale Diamonds Direct£2,373 GBP

22 data points across 4 retailers

3 retailers£1,422 GBP to £2,373 GBP

A
Cheapest Retailer
-
£1,422 GBP
B+
Retailer 2
-
£1,832 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
627350731 · Nov 6
£2,373 GBP
$3,176 USD
View
2 more retailers have this diamond
Prices start from £1,422 GBPSave up to £950 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
1.51ct Marquise
£1,422 GBP