CaratHunter
Plans
Cushion|Natural|GIA

1.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 1448393702

Certificate GIA 1448393702

Diamond specifications and retailer prices

From £2,209 GBP
$2,959 USD
As of October 31, 2026
Save £1,089 GBP (33%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,297 GBP at 77 Diamonds · As of November 1, 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 D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1448393702. Listed at 10 retailers as of October 31, 2026, with prices from £2,209 to £3,297, a £1,089 spread on the same certified stone. 77 Diamonds lists it at £3,297. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1448393702
Dimensions6.55 × 6.20 × 4.32 mm
L/W Ratio1.06
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.55 mm6.20 mm1.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1448393702
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: 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: £3,297 GBP|Low: £398 GBP|High: £3,305 GBP|Avg: £2,169 GBP|+2.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 5£398 GBP
Retailer 4£2,234 GBP
Retailer 2£2,258 GBP
Retailer 3£2,788 GBP
77 Diamonds£3,297 GBP

33 data points across 5 retailers

10 retailers£2,209 GBP to £3,297 GBP

A
Cheapest Retailer
-
£2,209 GBP
$2,959 USD
A
Retailer 2
-
£2,234 GBP
$2,993 USD
View
Retailer 3
-
£2,258 GBP
$3,025 USD
View
Price last confirmed 11 days ago
A
Retailer 4
-
£2,265 GBP
$3,035 USD
View
A
Retailer 5
-
£2,361 GBP
$3,163 USD
View
B+
Retailer 6
-
£2,788 GBP
$3,735 USD
View
B+
Retailer 7
-
£2,948 GBP
$3,950 USD
View
B+
Retailer 8
-
£2,948 GBP
$3,950 USD
View
B+
Retailer 9
-
£3,045 GBP
$4,080 USD
View
Most Expensive
B+
77 Diamonds
CUSMBVCPXEWKD · Nov 1
£3,297 GBP
View
9 more retailers have this diamond
Prices start from £2,209 GBPSave up to £1,089 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
£2,209 GBP