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Cushion|Natural|GIA

0.51ct G SI1 Cushion Natural Diamond

VG • G/SI1 • GIA 1182022177

Certificate GIA 1182022177

Diamond specifications and retailer prices

From £575 GBP
As of November 4, 2026
Save £683 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,257 GBP at MOH London · As of November 4, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1182022177. Listed at 14 retailers as of November 4, 2026, with prices from £575 to £1,257, a £683 spread on the same certified stone. MOH London lists it at £1,257. 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
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1182022177
Dimensions4.90 × 4.33 × 2.92 mm
L/W Ratio1.13
Top View
4.90 mm4.33 mm0.51 ctG / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1182022177
Side View
Table 55.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,257 GBP|Low: £575 GBP|High: £1,274 GBP|Avg: £856 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 7£575 GBP
Retailer 5£616 GBP
Retailer 8£616 GBP
Retailer 6£695 GBP
Retailer 3£796 GBP
Retailer 4£842 GBP
Retailer 9£1,033 GBP
Retailer 2£1,061 GBP
MOH London£1,257 GBP

41 data points across 9 retailers

14 retailers£575 GBP to £1,257 GBP

B+
Cheapest Retailer
-
£575 GBP
Final sale: no returns
B+
Retailer 2
-
£616 GBP
View
Retailer 3
-
£616 GBP
View
Price last confirmed 19 days ago
B
Retailer 4
-
£616 GBP
View
B
Retailer 5
-
£695 GBP
View
B
Retailer 6
-
£710 GBP
View
B
Retailer 7
-
£762 GBP
View
B
Retailer 8
-
£762 GBP
View
B
Retailer 9
-
£792 GBP
View
B
Retailer 10
-
£796 GBP
View
B
Retailer 11
-
£842 GBP
View
Retailer 12
-
£1,033 GBP
View
Price last confirmed 33 days ago
B
Retailer 13
-
£1,061 GBP
View
Most Expensive
B
MOH London
EEA28D4CE · Nov 4
£1,257 GBP
View
13 more retailers have this diamond
Prices start from £575 GBPSave up to £683 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
£575 GBP