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Cushion|Natural|GIA

1.51ct D SI2 Cushion Natural Diamond

EX • D/SI2 • GIA 6555141851

Certificate GIA 6555141851

Diamond specifications and retailer prices

From £3,104 GBP
$4,159 USD
As of October 30, 2026
Save £2,594 GBP (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,698 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555141851. Listed at 8 retailers as of October 29, 2026, with prices from £3,104 to £5,698, a £2,594 spread on the same certified stone. MOH London lists it at £5,698. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555141851
Dimensions7.82 × 5.90 × 3.95 mm
L/W Ratio1.33
Top View
7.82 mm5.90 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555141851
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.9%

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 30
Current: £5,698 GBP|Low: £2,702 GBP|High: £6,222 GBP|Avg: £3,750 GBP|-8.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7£3,104 GBP
Retailer 2£3,120 GBP
Retailer 5£3,222 GBP
Retailer 8£3,285 GBP
Retailer 4£3,364 GBP
Retailer 6£3,382 GBP
Retailer 3£3,539 GBP
Retailer 9£3,787 GBP
MOH London£5,698 GBP

46 data points across 9 retailers

8 retailers£3,104 GBP to £5,698 GBP

A
Cheapest Retailer
-
£3,104 GBP
$4,159 USD
A
Retailer 2
-
£3,120 GBP
₹398,173 INR
View
A
Retailer 3
-
£3,222 GBP
A$6,641 AUD
View
A
Retailer 4
-
£3,285 GBP
$4,402 USD
View
Final sale: no returns
A
Retailer 5
-
£3,364 GBP
View
A
Retailer 6
-
£3,382 GBP
$4,532 USD
View
A
Retailer 7
-
£3,539 GBP
View
Most Expensive
B+
MOH London
FD5D29FA0 · Oct 29
£5,698 GBP
View
7 more retailers have this diamond
Prices start from £3,104 GBPSave up to £2,594 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
£3,104 GBP