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Cushion|Natural|GIA

1.51ct E SI2 Cushion Natural Diamond

VG • E/SI2 • GIA 6551945817

Certificate GIA 6551945817

Diamond specifications and retailer prices

From £4,116 GBP
A$8,433 AUD
As of October 29, 2026
Save £3,304 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,420 GBP at MOH London · As of October 29, 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 E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551945817. Listed at 12 retailers as of October 29, 2026, with prices from £4,116 to £7,420, a £3,304 spread on the same certified stone. MOH London lists it at £7,420. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.15°
Pavilion angle34.84°
OriginNatural
Grading LabGIA
CertificateGIA 6551945817
Dimensions7.71 × 5.94 × 4.03 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Cavity, Needle
Top View
7.71 mm5.94 mm1.51 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551945817
Side View
Table 61.0%Crown 38.15°Girdle: STK-THKPavilion 34.84°Culet: NDepth 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: Oct 29
Current: £7,420 GBP|Low: £3,631 GBP|High: £7,469 GBP|Avg: £5,099 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 7£4,521 GBP
Retailer 5£4,623 GBP
Retailer 4£4,624 GBP
Retailer 3£4,748 GBP
Retailer 2£4,790 GBP
Retailer 6£5,142 GBP
MOH London£7,420 GBP

44 data points across 7 retailers

12 retailers£4,116 GBP to £7,420 GBP

A
Cheapest Retailer
-
£4,116 GBP
A$8,433 AUD
A
Retailer 2
-
£4,239 GBP
$5,645 USD
View
B+
Retailer 3
-
£4,368 GBP
$5,817 USD
View
B+
Retailer 4
-
£4,521 GBP
$6,020 USD
View
B+
Retailer 5
-
£4,623 GBP
$6,157 USD
View
Final sale: no returns
B+
Retailer 6
-
£4,624 GBP
$6,158 USD
View
B+
Retailer 7
-
£4,631 GBP
A$9,488 AUD
View
B+
Retailer 8
-
£4,748 GBP
View
B+
Retailer 9
-
£4,790 GBP
View
B+
Retailer 10
-
£5,129 GBP
$6,830 USD
View
B+
Retailer 11
-
£5,142 GBP
$6,847 USD
View
Most Expensive
B
MOH London
21BB59F67 · Oct 29
£7,420 GBP
View
11 more retailers have this diamond
Prices start from £4,116 GBPSave up to £3,304 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
£4,116 GBP