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Marquise|Natural|GIA

1.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2566145579

Certificate GIA 2566145579

Diamond specifications and retailer prices

From £5,510 GBP
As of November 4, 2026
Save £2,613 GBP (32%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £8,123 GBP at Diamonds Direct · As of November 4, 2026
View at 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566145579. Listed at 11 retailers as of November 4, 2026, with prices from £5,510 to £8,123, a £2,613 spread on the same certified stone. Diamonds Direct lists it at £8,123. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle40.32°
OriginNatural
Grading LabGIA
CertificateGIA 2566145579
Dimensions11.21 × 5.93 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.21 mm5.93 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566145579
Side View
Table 60.0%Crown 38.2°Girdle: MED-THKPavilion 40.32°Culet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £8,123 GBP|Low: £5,510 GBP|High: £8,459 GBP|Avg: £6,805 GBP|-4.0%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£5,510 GBP
Retailer 2£5,565 GBP
Retailer 12£6,010 GBP
Retailer 6£6,064 GBP
Retailer 4£6,100 GBP
Retailer 3£6,210 GBP
Retailer 5£6,217 GBP
Retailer 9£7,092 GBP
Retailer 10£7,158 GBP
Retailer 8£7,264 GBP
Retailer 7£7,286 GBP
Diamonds Direct£8,123 GBP

34 data points across 12 retailers

11 retailers£5,510 GBP to £8,123 GBP

A
Cheapest Retailer
-
£5,510 GBP
A
Retailer 2
-
£5,565 GBP
View
Retailer 3
-
£6,010 GBP
View
Price last confirmed 10 days ago
A
Retailer 4
-
£6,064 GBP
View
A
Retailer 5
-
£6,210 GBP
View
A
Retailer 6
-
£6,217 GBP
View
B+
Retailer 7
-
£7,092 GBP
View
B+
Retailer 8
-
£7,158 GBP
View
B+
Retailer 9
-
£7,264 GBP
View
B+
Retailer 10
-
£7,286 GBP
View
Most Expensive
B+
Diamonds Direct
1112120 · Nov 4
£8,123 GBP
$10,872 USD
View
10 more retailers have this diamond
Prices start from £5,510 GBPSave up to £2,613 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
£5,510 GBP