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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

GD • H/SI1 • GIA 5436497455

Certificate GIA 5436497455

Diamond specifications and retailer prices

From £2,289 GBP
$3,067 USD
As of October 31, 2026
Save £2,718 GBP (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,007 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5436497455. Listed at 20 retailers as of October 29, 2026, with prices from £2,289 to £5,007, a £2,718 spread on the same certified stone. MOH London lists it at £5,007. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5436497455
Dimensions6.39 × 6.28 × 4.34 mm
L/W Ratio1.02
Top View
6.39 mm6.28 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5436497455
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.1%

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 31
Current: £5,007 GBP|Low: £2,289 GBP|High: £5,041 GBP|Avg: £3,105 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8£2,289 GBP
Retailer 10£2,340 GBP
Retailer 11£2,491 GBP
Retailer 9£2,589 GBP
Retailer 7£2,698 GBP
Retailer 2£2,806 GBP
Retailer 5£3,047 GBP
Retailer 3£3,193 GBP
Retailer 4£3,369 GBP
Retailer 6£3,661 GBP
MOH London£5,007 GBP

34 data points across 11 retailers

20 retailers£2,289 GBP to £5,007 GBP

A
Cheapest Retailer
-
£2,289 GBP
$3,067 USD
A
Retailer 2
-
£2,340 GBP
$3,135 USD
View
B+
Retailer 3
-
£2,395 GBP
$3,209 USD
View
B+
Retailer 4
-
£2,491 GBP
$3,337 USD
View
Final sale: no returns
A
Retailer 5
-
£2,589 GBP
$3,469 USD
View
B+
Retailer 6
-
£2,593 GBP
$3,475 USD
View
B+
Retailer 7
-
£2,669 GBP
$3,577 USD
View
B+
Retailer 8
-
£2,698 GBP
$3,615 USD
View
B+
Retailer 9
-
£2,701 GBP
$3,619 USD
View
B+
Retailer 10
-
£2,806 GBP
View
B+
Retailer 11
-
£2,884 GBP
$3,864 USD
View
B+
Retailer 12
-
£3,047 GBP
View
B+
Retailer 13
-
£3,052 GBP
$4,090 USD
View
B+
Retailer 14
-
£3,052 GBP
$4,090 USD
View
B+
Retailer 15
-
£3,157 GBP
$4,230 USD
View
Retailer 16
-
£3,193 GBP
A$6,583 AUD
View
Price last confirmed 29 days ago
B+
Retailer 17
-
£3,369 GBP
€4,299 EUR
View
Retailer 18
-
£3,371 GBP
$4,517 USD
View
Price last confirmed 10 days ago
B+
Retailer 19
-
£3,661 GBP
ZAR 79,243 ZAR
View
Most Expensive
B
MOH London
595F6FEA4 · Oct 29
£5,007 GBP
View
19 more retailers have this diamond
Prices start from £2,289 GBPSave up to £2,718 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
£2,289 GBP