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Cushion|Natural|GIA

1.20ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 1555540155

Certificate GIA 1555540155

Diamond specifications and retailer prices

From £1,872 GBP
HK$19,600 HKD
As of November 1, 2026
Save £2,748 GBP (59%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,621 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 D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1555540155. Listed at 15 retailers as of October 28, 2026, with prices from £1,872 to £4,621, a £2,748 spread on the same certified stone. Queensmith lists it at £4,621. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555540155
Dimensions7.40 × 5.52 × 3.73 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
7.40 mm5.52 mm1.20 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555540155
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 67.5%

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: £4,621 GBP|Low: £1,853 GBP|High: £4,711 GBP|Avg: £2,779 GBP|+0.7%
Queensmith
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 1, 2026
Retailer 9£1,872 GBP
Retailer 2£1,962 GBP
Retailer 5£2,269 GBP
Retailer 13£2,288 GBP
Retailer 6£2,451 GBP
Retailer 11£2,479 GBP
Retailer 12£2,587 GBP
Retailer 8£2,591 GBP
Retailer 4£2,600 GBP
Retailer 3£2,666 GBP
Retailer 10£2,903 GBP
Retailer 7£4,147 GBP
Queensmith£4,621 GBP

23 data points across 13 retailers

15 retailers£1,872 GBP to £4,621 GBP

A
Cheapest Retailer
-
£1,872 GBP
HK$19,600 HKD
A
Retailer 2
-
£1,962 GBP
₹250,318 INR
View
B+
Retailer 3
-
£2,269 GBP
SGD 4,108 SGD
View
B+
Retailer 4
-
£2,288 GBP
$3,066 USD
View
Final sale: no returns
B
Retailer 5
-
£2,401 GBP
$3,217 USD
View
B+
Retailer 6
-
£2,451 GBP
View
B
Retailer 7
-
£2,479 GBP
$3,322 USD
View
B
Retailer 8
-
£2,541 GBP
A$5,238 AUD
View
B
Retailer 9
-
£2,587 GBP
$3,466 USD
View
B
Retailer 10
-
£2,591 GBP
View
B
Retailer 11
-
£2,600 GBP
SGD 4,708 SGD
View
B
Retailer 12
-
£2,666 GBP
$3,572 USD
View
B
Retailer 13
-
£2,903 GBP
€3,704 EUR
View
B
Retailer 14
-
£4,147 GBP
View
Most Expensive
B
Queensmith
1555540155 · Oct 28
£4,621 GBP
View
14 more retailers have this diamond
Prices start from £1,872 GBPSave up to £2,748 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
£1,872 GBP