CaratHunter
Plans
Cushion|Natural|GIA

1.51ct I IF Cushion Natural Diamond

GD • I/IF • GIA 5546312975

Certificate GIA 5546312975

Diamond specifications and retailer prices

From £2,658 GBP
As of November 6, 2026
Save £868 GBP (25%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,526 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546312975. Listed at 10 retailers as of November 6, 2026, with prices from £2,658 to £3,526, a £868 spread on the same certified stone. Brilliant Earth lists it at £3,526. 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
I
Colour
IF
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5546312975
Dimensions6.60 × 6.19 × 4.18 mm
L/W Ratio1.07
Top View
6.60 mm6.19 mm1.51 ctI / IF
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546312975
Side View
Table 57.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 67.5%

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: £3,526 GBP|Low: £2,555 GBP|High: £3,706 GBP|Avg: £2,938 GBP|-4.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4£2,555 GBP
Retailer 6£2,658 GBP
Retailer 2£2,675 GBP
Retailer 7£2,728 GBP
Retailer 9£2,775 GBP
Retailer 3£2,837 GBP
Retailer 8£2,881 GBP
Retailer 5£3,168 GBP
Brilliant Earth£3,526 GBP

39 data points across 9 retailers

10 retailers£2,658 GBP to £3,526 GBP

Retailer 1
-
£2,555 GBP
Price last confirmed 10 days ago
A
Retailer 2
-
£2,658 GBP
View
A
Retailer 3
-
£2,675 GBP
View
A
Retailer 4
-
£2,728 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,775 GBP
View
A
Retailer 6
-
£2,837 GBP
View
A
Retailer 7
-
£2,881 GBP
View
A
Retailer 8
-
£3,168 GBP
View
B+
Retailer 9
-
£3,423 GBP
View
Most Expensive
B+
Brilliant Earth
17006011A · Nov 6
£3,526 GBP
$4,720 USD
View
9 more retailers have this diamond
Prices start from £2,658 GBPSave up to £868 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
£2,658 GBP