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Cushion|Natural|GIA

1.20ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 6551312576

Certificate GIA 6551312576

Diamond specifications and retailer prices

From £1,587 GBP
As of November 6, 2026
Save £2,108 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,327 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551312576. Listed at 15 retailers as of November 4, 2026, with a 133% 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551312576
Dimensions7.68 × 5.36 × 3.74 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Cavity
Top View
7.68 mm5.36 mm1.20 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551312576
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.9%

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: £4,327 GBP|Low: £1,578 GBP|High: £4,407 GBP|Avg: £2,480 GBP|+1.3%
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 7, 2026
Retailer 11£1,587 GBP
Retailer 6£1,659 GBP
Retailer 9£1,937 GBP
Retailer 3£1,951 GBP
Retailer 7£2,079 GBP
Retailer 12£2,114 GBP
Retailer 5£2,213 GBP
Retailer 13£2,220 GBP
Retailer 2£2,238 GBP
Retailer 4£2,290 GBP
Retailer 8£2,460 GBP
Retailer 10£3,694 GBP
Queensmith£4,327 GBP

25 data points across 13 retailers

15 retailers£1,587 GBP to £3,694 GBP

A
Cheapest Retailer
-
£1,587 GBP
A
Retailer 2
-
£1,659 GBP
View
B+
Retailer 3
-
£1,937 GBP
View
A
Retailer 4
-
£1,951 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,057 GBP
View
B+
Retailer 6
-
£2,079 GBP
View
Retailer 7
-
£2,114 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£2,213 GBP
View
B+
Retailer 9
-
£2,220 GBP
View
B+
Retailer 10
-
£2,238 GBP
View
B+
Retailer 11
-
£2,271 GBP
View
B+
Retailer 12
-
£2,290 GBP
View
B+
Retailer 13
-
£2,460 GBP
View
B
Retailer 14
-
£3,694 GBP
View
Most Expensive
Queensmith
6551312576 · Oct 28
£4,327 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £1,587 GBPSave up to £2,108 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
£1,587 GBP