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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

GD • D/SI1 • GIA 7511675994

Certificate GIA 7511675994

Diamond specifications and retailer prices

From £358 GBP
As of November 6, 2026
Save £737 GBP (67%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,095 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7511675994. Listed at 14 retailers as of November 2, 2026, with prices from £358 to £1,095, a £737 spread on the same certified stone. MOH London lists it at £1,095. 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

0.51
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7511675994
Dimensions5.73 × 4.07 × 2.93 mm
L/W Ratio1.41
Key to symbols
Crystal, Cloud
Top View
5.73 mm4.07 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7511675994
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.9%

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: Nov 6
Current: £1,095 GBP|Low: £358 GBP|High: £1,140 GBP|Avg: £632 GBP|-3.6%
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 6, 2026
Retailer 2£358 GBP
Retailer 5£411 GBP
Retailer 13£507 GBP
Retailer 10£510 GBP
Retailer 9£572 GBP
Retailer 7£578 GBP
Retailer 12£594 GBP
Retailer 11£613 GBP
Retailer 3£678 GBP
Retailer 4£682 GBP
Retailer 6£693 GBP
Retailer 8£731 GBP
MOH London£1,095 GBP

31 data points across 13 retailers

14 retailers£358 GBP to £1,095 GBP

A
Cheapest Retailer
-
£358 GBP
B+
Retailer 2
-
£411 GBP
View
Retailer 3
-
£507 GBP
View
Price last confirmed 11 days ago
Retailer 4
-
£510 GBP
View
Price last confirmed 9 days ago
B
Retailer 5
-
£572 GBP
View
B
Retailer 6
-
£578 GBP
View
B
Retailer 7
-
£594 GBP
View
B+
Retailer 8
-
£613 GBP
View
B
Retailer 9
-
£678 GBP
View
Retailer 10
-
£682 GBP
View
Price last confirmed 17 days ago
B
Retailer 11
-
£693 GBP
View
B
Retailer 12
-
£731 GBP
View
Retailer 13
-
£733 GBP
View
Price last confirmed 33 days ago
Most Expensive
B
MOH London
DE2A94A13 · Nov 2
£1,095 GBP
View
13 more retailers have this diamond
Prices start from £358 GBPSave up to £737 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
0.51ct Cushion
£358 GBP