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Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 7551653453

Certificate GIA 7551653453

Diamond specifications and retailer prices

From £2,256 GBP
As of November 6, 2026
Save £2,733 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,038 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551653453. Listed at 19 retailers as of November 2, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551653453
Dimensions7.88 × 5.09 × 3.39 mm
L/W Ratio1.55
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cavity, Needle, Indented Natural
Top View
7.88 mm5.09 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551653453
Side View
Table 66.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.5%

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 6
Current: £5,038 GBP|Low: £2,228 GBP|High: £5,169 GBP|Avg: £3,277 GBP|-1.8%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 15£2,256 GBP
Retailer 2£2,338 GBP
Retailer 6£2,681 GBP
Retailer 13£2,734 GBP
Retailer 5£2,754 GBP
Retailer 10£2,839 GBP
Retailer 3£2,846 GBP
Retailer 8£2,894 GBP
Retailer 11£3,004 GBP
Retailer 4£3,094 GBP
Retailer 7£3,182 GBP
Retailer 9£3,358 GBP
Retailer 12£3,642 GBP
Retailer 14£4,989 GBP
Queensmith£5,038 GBP

23 data points across 15 retailers

19 retailers£2,256 GBP to £4,989 GBP

A
Cheapest Retailer
-
£2,256 GBP
B+
Retailer 2
-
£2,338 GBP
View
B+
Retailer 3
-
£2,681 GBP
View
B+
Retailer 4
-
£2,734 GBP
View
B+
Retailer 5
-
£2,754 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,839 GBP
View
B+
Retailer 7
-
£2,846 GBP
View
B+
Retailer 8
-
£2,852 GBP
View
B+
Retailer 9
-
£2,894 GBP
View
B+
Retailer 10
-
£3,004 GBP
View
B+
Retailer 11
-
£3,044 GBP
View
Retailer 12
-
£3,074 GBP
View
Price last confirmed 22 days ago
B+
Retailer 13
-
£3,094 GBP
View
B
Retailer 14
-
£3,182 GBP
View
Retailer 15
-
£3,328 GBP
View
Price last confirmed 34 days ago
B
Retailer 16
-
£3,358 GBP
View
B
Retailer 17
-
£3,642 GBP
View
B
Retailer 18
-
£4,989 GBP
View
Most Expensive
Queensmith
7551653453 · Oct 28
£5,038 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from £2,256 GBPSave up to £2,733 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
£2,256 GBP