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Cushion|Natural|GIA

1.51ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 7548774120

Certificate GIA 7548774120

Diamond specifications and retailer prices

From £2,814 GBP
HK$29,500 HKD
As of November 1, 2026
Save £3,759 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,573 GBP at Queensmith · As of October 28, 2026
View at Queensmith

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 7548774120. Listed at 15 retailers as of October 28, 2026, with prices from £2,814 to £6,573, a £3,759 spread on the same certified stone. Queensmith lists it at £6,573. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7548774120
Dimensions7.90 × 5.89 × 3.99 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle
Top View
7.90 mm5.89 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7548774120
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.8%

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: £6,573 GBP|Low: £2,795 GBP|High: £6,615 GBP|Avg: £3,951 GBP|+2.2%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 10£2,814 GBP
Retailer 2£3,012 GBP
Retailer 5£3,316 GBP
Retailer 3£3,433 GBP
Retailer 6£3,504 GBP
Retailer 12£3,581 GBP
Retailer 8£3,698 GBP
Retailer 11£3,719 GBP
Retailer 4£3,832 GBP
Retailer 13£3,927 GBP
Retailer 7£4,208 GBP
Retailer 9£5,923 GBP
Queensmith£6,573 GBP

25 data points across 13 retailers

15 retailers£2,814 GBP to £6,573 GBP

A
Cheapest Retailer
-
£2,814 GBP
HK$29,500 HKD
A
Retailer 2
-
£3,012 GBP
₹384,944 INR
View
A
Retailer 3
-
£3,316 GBP
SGD 6,014 SGD
View
A
Retailer 4
-
£3,433 GBP
$4,607 USD
View
Final sale: no returns
A
Retailer 5
-
£3,448 GBP
$4,627 USD
View
A
Retailer 6
-
£3,504 GBP
View
A
Retailer 7
-
£3,581 GBP
SGD 6,494 SGD
View
A
Retailer 8
-
£3,698 GBP
View
A
Retailer 9
-
£3,719 GBP
$4,991 USD
View
A
Retailer 10
-
£3,832 GBP
$5,143 USD
View
A
Retailer 11
-
£3,859 GBP
A$7,968 AUD
View
B+
Retailer 12
-
£3,927 GBP
$5,270 USD
View
B+
Retailer 13
-
£4,208 GBP
€5,378 EUR
View
B+
Retailer 14
-
£5,923 GBP
View
Most Expensive
B
Queensmith
7548774120 · Oct 28
£6,573 GBP
View
14 more retailers have this diamond
Prices start from £2,814 GBPSave up to £3,759 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
£2,814 GBP