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Cushion|Natural|GIA

1.51ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 6243003386

Certificate GIA 6243003386

Diamond specifications and retailer prices

From £2,461 GBP
HK$25,800 HKD
As of November 1, 2026
Save £2,828 GBP (53%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,289 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion 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 6243003386. Listed at 8 retailers as of November 1, 2026, with prices from £2,461 to £5,289, a £2,828 spread on the same certified stone. MOH London lists it at £5,289. 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
Pavilion angle37.55°
OriginNatural
Grading LabGIA
CertificateGIA 6243003386
Dimensions7.79 × 5.93 × 4.14 mm
L/W Ratio1.31
Key to symbols
Crystal, Feather, Needle
Top View
7.79 mm5.93 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6243003386
Side View
Table 65.0%CrownGirdle: MED-THKPavilion 37.55°Culet: NoneDepth 69.8%

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 1
Current: £5,289 GBP|Low: £2,451 GBP|High: £6,201 GBP|Avg: £3,851 GBP|-14.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4£2,461 GBP
Retailer 5£2,951 GBP
Retailer 2£3,129 GBP
Retailer 7£3,145 GBP
Retailer 6£3,540 GBP
Retailer 3£3,832 GBP
MOH London£5,289 GBP

45 data points across 7 retailers

8 retailers£2,461 GBP to £5,289 GBP

A
Cheapest Retailer
-
£2,461 GBP
HK$25,800 HKD
A
Retailer 2
-
£2,951 GBP
$3,960 USD
View
A
Retailer 3
-
£3,129 GBP
View
A
Retailer 4
-
£3,145 GBP
SGD 5,704 SGD
View
A
Retailer 5
-
£3,540 GBP
$4,750 USD
View
A
Retailer 6
-
£3,816 GBP
A$7,878 AUD
View
A
Retailer 7
-
£3,832 GBP
€4,898 EUR
View
Most Expensive
B+
MOH London
5BD481C81 · Nov 1
£5,289 GBP
View
7 more retailers have this diamond
Prices start from £2,461 GBPSave up to £2,828 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 Cushion
£2,461 GBP