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Cushion|Natural|GIA

1.20ct G SI2 Cushion Natural Diamond

GD • G/SI2 • GIA 6551518103

Certificate GIA 6551518103

Diamond specifications and retailer prices

From £1,586 GBP
HK$16,600 HKD
As of November 1, 2026
Save £2,727 GBP (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,313 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551518103. Listed at 14 retailers as of October 28, 2026, with prices from £1,586 to £4,313, a £2,727 spread on the same certified stone. Queensmith lists it at £4,313. 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

1.20
Carat
G
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551518103
Dimensions7.36 × 5.50 × 3.73 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural
Top View
7.36 mm5.50 mm1.20 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551518103
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.8%

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 1
Current: £4,313 GBP|Low: £1,567 GBP|High: £4,379 GBP|Avg: £2,413 GBP|+1.2%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 6£1,586 GBP
Retailer 2£1,662 GBP
Retailer 4£1,910 GBP
Retailer 11£1,939 GBP
Retailer 10£2,101 GBP
Retailer 3£2,199 GBP
Retailer 9£2,207 GBP
Retailer 5£2,246 GBP
Retailer 12£2,284 GBP
Retailer 7£2,460 GBP
Retailer 8£3,701 GBP
Queensmith£4,313 GBP

30 data points across 12 retailers

14 retailers£1,586 GBP to £4,313 GBP

A
Cheapest Retailer
-
£1,586 GBP
HK$16,600 HKD
A
Retailer 2
-
£1,662 GBP
₹212,049 INR
View
B+
Retailer 3
-
£1,910 GBP
SGD 3,459 SGD
View
B+
Retailer 4
-
£1,939 GBP
$2,598 USD
View
Final sale: no returns
B+
Retailer 5
-
£2,039 GBP
$2,732 USD
View
B+
Retailer 6
-
£2,101 GBP
$2,815 USD
View
B+
Retailer 7
-
£2,199 GBP
SGD 3,982 SGD
View
B+
Retailer 8
-
£2,207 GBP
$2,957 USD
View
B
Retailer 9
-
£2,245 GBP
A$4,628 AUD
View
B+
Retailer 10
-
£2,246 GBP
View
B+
Retailer 11
-
£2,284 GBP
$3,060 USD
View
B
Retailer 12
-
£2,460 GBP
€3,139 EUR
View
B
Retailer 13
-
£3,701 GBP
View
Most Expensive
C
Queensmith
6551518103 · Oct 28
£4,313 GBP
View
13 more retailers have this diamond
Prices start from £1,586 GBPSave up to £2,727 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
1.20ct Cushion
£1,586 GBP