CaratHunter
Plans
Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 5546300939

Certificate GIA 5546300939

Diamond specifications and retailer prices

From £2,285 GBP
$3,062 USD
As of October 31, 2026
Save £2,152 GBP (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,437 GBP at MOH London · As of November 1, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5546300939. Listed at 14 retailers as of October 31, 2026, with prices from £2,285 to £4,437, a £2,152 spread on the same certified stone. MOH London lists it at £4,437. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.42°
Pavilion angle31.98°
OriginNatural
Grading LabGIA
CertificateGIA 5546300939
Dimensions6.35 × 6.22 × 4.34 mm
L/W Ratio1.02
Top View
6.35 mm6.22 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546300939
Side View
Table 61.0%Crown 38.42°Girdle: THK-VTKPavilion 31.98°Culet: NoneDepth 69.7%

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: £4,437 GBP|Low: £2,285 GBP|High: £5,232 GBP|Avg: £3,083 GBP|-14.3%
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
November 2, 2026
Retailer 12£2,285 GBP
Retailer 3£2,292 GBP
Retailer 7£2,481 GBP
Retailer 4£2,549 GBP
Retailer 13£2,607 GBP
Retailer 9£2,637 GBP
Retailer 8£2,754 GBP
Retailer 11£2,754 GBP
Retailer 2£2,799 GBP
Retailer 10£2,844 GBP
Retailer 6£2,940 GBP
Retailer 5£3,868 GBP
MOH London£4,437 GBP

43 data points across 13 retailers

14 retailers£2,285 GBP to £4,437 GBP

A
Cheapest Retailer
-
£2,285 GBP
$3,062 USD
A
Retailer 2
-
£2,292 GBP
$3,072 USD
View
A
Retailer 3
-
£2,481 GBP
CA$4,617 CAD
View
A
Retailer 4
-
£2,549 GBP
$3,416 USD
View
A
Retailer 5
-
£2,607 GBP
$3,493 USD
View
A
Retailer 6
-
£2,637 GBP
$3,533 USD
View
A
Retailer 7
-
£2,754 GBP
$3,690 USD
View
A
Retailer 8
-
£2,754 GBP
$3,690 USD
View
A
Retailer 9
-
£2,799 GBP
View
A
Retailer 10
-
£2,844 GBP
$3,810 USD
View
A
Retailer 11
-
£2,940 GBP
€3,752 EUR
View
A
Retailer 12
-
£3,157 GBP
CA$5,876 CAD
View
Retailer 13
-
£3,868 GBP
$5,182 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
CC9B938F1 · Nov 1
£4,437 GBP
View
13 more retailers have this diamond
Prices start from £2,285 GBPSave up to £2,152 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
£2,285 GBP