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Cushion|Natural|GIA

1.51ct E SI2 Cushion Natural Diamond

GD • E/SI2 • GIA 6421495236

Certificate GIA 6421495236

Diamond specifications and retailer prices

From £2,507 GBP
$3,339 USD
As of October 28, 2026
Save £1,222 GBP (33%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,729 GBP at 77 Diamonds · As of October 29, 2026
View at 77 Diamonds

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6421495236. Listed at 12 retailers as of October 28, 2026, with prices from £2,507 to £3,729, a £1,222 spread on the same certified stone. 77 Diamonds lists it at £3,729. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6421495236
Dimensions6.91 × 6.25 × 4.08 mm
L/W Ratio1.11
Top View
6.91 mm6.25 mm1.51 ctE / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6421495236
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.2%

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 28
Current: £3,729 GBP|Low: £2,479 GBP|High: £3,749 GBP|Avg: £3,071 GBP|+1.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 5£2,513 GBP
Retailer 3£2,553 GBP
Retailer 4£3,144 GBP
Retailer 2£3,475 GBP
77 Diamonds£3,729 GBP

40 data points across 5 retailers

12 retailers£2,507 GBP to £3,729 GBP

A
Cheapest Retailer
-
£2,507 GBP
$3,339 USD
A
Retailer 2
-
£2,513 GBP
$3,346 USD
View
A
Retailer 3
-
£2,553 GBP
$3,400 USD
View
A
Retailer 4
-
£2,569 GBP
$3,421 USD
View
B+
Retailer 5
-
£2,679 GBP
$3,568 USD
View
B+
Retailer 6
-
£2,705 GBP
A$5,542 AUD
View
B+
Retailer 7
-
£3,144 GBP
$4,187 USD
View
B+
Retailer 8
-
£3,334 GBP
$4,440 USD
View
B+
Retailer 9
-
£3,334 GBP
$4,440 USD
View
B+
Retailer 10
-
£3,447 GBP
$4,590 USD
View
B+
Retailer 11
-
£3,475 GBP
€4,407 EUR
View
Most Expensive
B+
77 Diamonds
CUSMBYQJVF43F · Oct 29
£3,729 GBP
View
11 more retailers have this diamond
Prices start from £2,507 GBPSave up to £1,222 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
£2,507 GBP