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Cushion|Natural|GIA

0.51ct E SI2 Cushion Natural Diamond

GD • E/SI2 • GIA 1299073936

Certificate GIA 1299073936

Diamond specifications and retailer prices

From £639 GBP
$851 USD
As of October 28, 2026
Save £375 GBP (37%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,014 GBP at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1299073936. Listed at 9 retailers as of October 28, 2026, with prices from £639 to £1,014, a £375 spread on the same certified stone. 77 Diamonds lists it at £1,014. 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
E
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1299073936
Dimensions4.75 × 4.59 × 3.10 mm
L/W Ratio1.03
Culet sizeNone
Top View
4.75 mm4.59 mm0.51 ctE / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1299073936
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £1,014 GBP|Low: £639 GBP|High: £1,044 GBP|Avg: £785 GBP|+2.3%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 6£639 GBP
Retailer 2£642 GBP
Retailer 5£666 GBP
Retailer 4£681 GBP
Retailer 7£741 GBP
Retailer 3£761 GBP
Retailer 8£819 GBP
Retailer 9£819 GBP
77 Diamonds£1,014 GBP
Retailer 10£1,044 GBP

36 data points across 10 retailers

9 retailers£639 GBP to £1,014 GBP

B
Cheapest Retailer
-
£639 GBP
$851 USD
B
Retailer 2
-
£666 GBP
$887 USD
View
B
Retailer 3
-
£681 GBP
$907 USD
View
B
Retailer 4
-
£741 GBP
$987 USD
View
B
Retailer 5
-
£761 GBP
$1,014 USD
View
B
Retailer 6
-
£819 GBP
$1,090 USD
View
B
Retailer 7
-
£819 GBP
$1,090 USD
View
B
Retailer 8
-
£849 GBP
$1,130 USD
View
Most Expensive
C
77 Diamonds
CUSZBKWDVSAU · Oct 30
£1,014 GBP
View
8 more retailers have this diamond
Prices start from £639 GBPSave up to £375 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.

B
0.51ct Cushion
£639 GBP