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Cushion|Natural|GIA

1.51ct E SI1 Cushion Natural Diamond

GD • E/SI1 • GIA 6551449414

Certificate GIA 6551449414

Diamond specifications and retailer prices

From £2,211 GBP
As of November 6, 2026
Save £2,755 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,966 GBP at MOH London · As of November 2, 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551449414. Listed at 15 retailers as of November 2, 2026, with prices from £2,211 to £4,966, a £2,755 spread on the same certified stone. MOH London lists it at £4,966. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551449414
Dimensions6.21 × 6.16 × 4.37 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
6.21 mm6.16 mm1.51 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551449414
Side View
Table 62.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 70.9%

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 6
Current: £4,966 GBP|Low: £2,211 GBP|High: £5,135 GBP|Avg: £3,084 GBP|-3.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 2£2,211 GBP
Retailer 15£2,332 GBP
Retailer 12£2,506 GBP
Retailer 14£2,584 GBP
Retailer 4£2,645 GBP
Retailer 8£2,733 GBP
Retailer 5£2,802 GBP
Retailer 9£2,957 GBP
Retailer 6£3,002 GBP
Retailer 13£3,119 GBP
Retailer 10£3,130 GBP
Retailer 3£3,302 GBP
Retailer 7£3,519 GBP
Retailer 11£3,585 GBP
MOH London£4,966 GBP

20 data points across 15 retailers

15 retailers£2,211 GBP to £4,966 GBP

A
Cheapest Retailer
-
£2,211 GBP
A
Retailer 2
-
£2,332 GBP
View
Final sale: no returns
A
Retailer 3
-
£2,506 GBP
View
A
Retailer 4
-
£2,584 GBP
View
A
Retailer 5
-
£2,645 GBP
View
A
Retailer 6
-
£2,733 GBP
View
A
Retailer 7
-
£2,802 GBP
View
A
Retailer 8
-
£2,957 GBP
View
Retailer 9
-
£3,002 GBP
View
Price last confirmed 8 days ago
A
Retailer 10
-
£3,119 GBP
View
A
Retailer 11
-
£3,130 GBP
View
A
Retailer 12
-
£3,302 GBP
View
Retailer 13
-
£3,358 GBP
View
Price last confirmed 33 days ago
A
Retailer 14
-
£3,585 GBP
View
Most Expensive
B+
MOH London
D9EF38E03 · Nov 2
£4,966 GBP
View
14 more retailers have this diamond
Prices start from £2,211 GBPSave up to £2,755 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
£2,211 GBP