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Cushion|Natural|GIA

1.51ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 5543528221

Certificate GIA 5543528221

Diamond specifications and retailer prices

From £2,852 GBP
HK$29,900 HKD
As of November 1, 2026
Save £3,759 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £6,611 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 5543528221. Listed at 13 retailers as of October 28, 2026, with prices from £2,852 to £6,611, a £3,759 spread on the same certified stone. Queensmith lists it at £6,611. 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 5543528221
Dimensions7.60 × 5.85 × 4.07 mm
L/W Ratio1.30
Top View
7.60 mm5.85 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543528221
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.6%

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: £6,611 GBP|Low: £2,823 GBP|High: £6,658 GBP|Avg: £4,197 GBP|+1.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7£2,852 GBP
Retailer 2£3,051 GBP
Retailer 3£3,360 GBP
Retailer 9£3,478 GBP
Retailer 5£3,747 GBP
Retailer 8£3,768 GBP
Retailer 10£3,808 GBP
Retailer 11£3,881 GBP
Retailer 4£4,264 GBP
Retailer 6£6,002 GBP
Queensmith£6,611 GBP

32 data points across 11 retailers

13 retailers£2,852 GBP to £6,611 GBP

A
Cheapest Retailer
-
£2,852 GBP
HK$29,900 HKD
A
Retailer 2
-
£3,051 GBP
₹389,880 INR
View
A
Retailer 3
-
£3,360 GBP
SGD 6,093 SGD
View
A
Retailer 4
-
£3,478 GBP
$4,667 USD
View
Final sale: no returns
A
Retailer 5
-
£3,493 GBP
$4,688 USD
View
A
Retailer 6
-
£3,747 GBP
View
A
Retailer 7
-
£3,768 GBP
$5,057 USD
View
A
Retailer 8
-
£3,808 GBP
$5,110 USD
View
A
Retailer 9
-
£3,881 GBP
$5,209 USD
View
B+
Retailer 10
-
£3,952 GBP
A$8,158 AUD
View
B+
Retailer 11
-
£4,264 GBP
€5,449 EUR
View
B+
Retailer 12
-
£6,002 GBP
View
Most Expensive
B
Queensmith
5543528221 · Oct 28
£6,611 GBP
View
12 more retailers have this diamond
Prices start from £2,852 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
£2,852 GBP