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Cushion|Natural|GIA

1.51ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 6545580701

Certificate GIA 6545580701

Diamond specifications and retailer prices

From £3,345 GBP
HK$34,800 HKD
As of October 29, 2026
Save £3,855 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £7,200 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 E 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 6545580701. Listed at 14 retailers as of October 28, 2026, with prices from £3,345 to £7,200, a £3,855 spread on the same certified stone. Queensmith lists it at £7,200. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545580701
Dimensions7.65 × 5.87 × 4.01 mm
L/W Ratio1.30
Top View
7.65 mm5.87 mm1.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545580701
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.4%

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: Oct 29
Current: £7,200 GBP|Low: £3,345 GBP|High: £7,253 GBP|Avg: £4,762 GBP|+2.0%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9£3,345 GBP
Retailer 5£3,608 GBP
Retailer 8£3,847 GBP
Retailer 3£3,970 GBP
Retailer 10£4,109 GBP
Retailer 2£4,343 GBP
Retailer 11£4,408 GBP
Retailer 4£4,479 GBP
Retailer 12£4,569 GBP
Retailer 7£4,858 GBP
Retailer 6£6,595 GBP
Queensmith£7,200 GBP

32 data points across 12 retailers

14 retailers£3,345 GBP to £7,200 GBP

A
Cheapest Retailer
-
£3,345 GBP
HK$34,800 HKD
A
Retailer 2
-
£3,608 GBP
₹457,563 INR
View
A
Retailer 3
-
£3,847 GBP
SGD 6,923 SGD
View
A
Retailer 4
-
£3,970 GBP
SGD 7,145 SGD
View
A
Retailer 5
-
£4,109 GBP
$5,472 USD
View
Final sale: no returns
A
Retailer 6
-
£4,129 GBP
$5,498 USD
View
A
Retailer 7
-
£4,343 GBP
View
B+
Retailer 8
-
£4,408 GBP
$5,870 USD
View
Retailer 9
-
£4,479 GBP
$5,964 USD
View
Price last confirmed 14 days ago
B+
Retailer 10
-
£4,569 GBP
$6,085 USD
View
B+
Retailer 11
-
£4,656 GBP
A$9,538 AUD
View
B+
Retailer 12
-
£4,858 GBP
€6,161 EUR
View
B+
Retailer 13
-
£6,595 GBP
View
Most Expensive
B
Queensmith
6545580701 · Oct 28
£7,200 GBP
View
13 more retailers have this diamond
Prices start from £3,345 GBPSave up to £3,855 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
£3,345 GBP