CaratHunter
Plans
Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 7551357788

Certificate GIA 7551357788

Diamond specifications and retailer prices

From £2,180 GBP
As of November 6, 2026
Save £2,657 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,962 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 7551357788. Listed at 19 retailers as of November 2, 2026, with a 122% 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
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551357788
Dimensions7.10 × 5.40 × 3.70 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Natural
Top View
7.10 mm5.40 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551357788
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.4%

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: £4,962 GBP|Low: £2,161 GBP|High: £5,057 GBP|Avg: £3,213 GBP|+1.0%
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£2,180 GBP
Retailer 2£2,269 GBP
Retailer 6£2,601 GBP
Retailer 13£2,640 GBP
Retailer 5£2,670 GBP
Retailer 10£2,752 GBP
Retailer 8£2,806 GBP
Retailer 3£2,893 GBP
Retailer 11£2,930 GBP
Retailer 4£3,002 GBP
Retailer 7£3,089 GBP
Retailer 9£3,368 GBP
Retailer 12£3,531 GBP
Retailer 14£4,838 GBP
Queensmith£4,962 GBP

24 data points across 15 retailers

19 retailers£2,180 GBP to £4,838 GBP

A
Cheapest Retailer
-
£2,180 GBP
A
Retailer 2
-
£2,269 GBP
View
B+
Retailer 3
-
£2,601 GBP
View
B+
Retailer 4
-
£2,640 GBP
View
B+
Retailer 5
-
£2,670 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,752 GBP
View
B
Retailer 7
-
£2,754 GBP
View
B
Retailer 8
-
£2,757 GBP
View
B+
Retailer 9
-
£2,806 GBP
View
Retailer 10
-
£2,893 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£2,927 GBP
View
B+
Retailer 12
-
£2,930 GBP
View
B+
Retailer 13
-
£3,002 GBP
View
B+
Retailer 14
-
£3,089 GBP
View
Retailer 15
-
£3,215 GBP
View
Price last confirmed 34 days ago
B
Retailer 16
-
£3,368 GBP
View
B
Retailer 17
-
£3,531 GBP
View
B
Retailer 18
-
£4,838 GBP
View
Most Expensive
Queensmith
7551357788 · Oct 28
£4,962 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from £2,180 GBPSave up to £2,657 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
£2,180 GBP