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Cushion|Natural|GIA

1.51ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 2556417868

Certificate GIA 2556417868

Diamond specifications and retailer prices

From £2,413 GBP
HK$25,300 HKD
As of November 2, 2026
Save £2,880 GBP (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,293 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 2556417868. Listed at 13 retailers as of November 1, 2026, with prices from £2,413 to £5,293, a £2,880 spread on the same certified stone. MOH London lists it at £5,293. 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
OriginNatural
Grading LabGIA
CertificateGIA 2556417868
Dimensions6.56 × 6.51 × 4.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.56 mm6.51 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556417868
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.7%

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 2
Current: £5,293 GBP|Low: £2,375 GBP|High: £5,400 GBP|Avg: £3,222 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2£2,413 GBP
Retailer 12£2,424 GBP
Retailer 10£2,549 GBP
Retailer 3£2,587 GBP
Retailer 8£2,689 GBP
Retailer 11£2,849 GBP
Retailer 7£2,892 GBP
Retailer 5£3,030 GBP
Retailer 9£3,070 GBP
Retailer 6£3,639 GBP
Retailer 4£5,013 GBP
MOH London£5,293 GBP

32 data points across 12 retailers

13 retailers£2,413 GBP to £5,293 GBP

A
Cheapest Retailer
-
£2,413 GBP
HK$25,300 HKD
A
Retailer 2
-
£2,424 GBP
$3,253 USD
View
A
Retailer 3
-
£2,549 GBP
$3,421 USD
View
A
Retailer 4
-
£2,587 GBP
$3,472 USD
View
A
Retailer 5
-
£2,689 GBP
$3,608 USD
View
Final sale: no returns
A
Retailer 6
-
£2,849 GBP
A$5,882 AUD
View
A
Retailer 7
-
£2,892 GBP
$3,881 USD
View
A
Retailer 8
-
£3,030 GBP
View
A
Retailer 9
-
£3,070 GBP
View
A
Retailer 10
-
£3,269 GBP
A$6,748 AUD
View
A
Retailer 11
-
£3,639 GBP
€4,651 EUR
View
Retailer 12
-
£5,013 GBP
$6,727 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
81F518F49 · Nov 1
£5,293 GBP
View
12 more retailers have this diamond
Prices start from £2,413 GBPSave up to £2,880 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
£2,413 GBP