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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6542610072

Certificate GIA 6542610072

Diamond specifications and retailer prices

From £1,778 GBP
As of November 6, 2026
Save £1,945 GBP (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,436 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded F 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 6542610072. Listed at 14 retailers as of November 6, 2026, with a 109% 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

1.21
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542610072
Dimensions6.07 × 5.66 × 3.84 mm
L/W Ratio1.07
Top View
6.07 mm5.66 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542610072
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.9%

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: £4,436 GBP|Low: £1,778 GBP|High: £4,450 GBP|Avg: £2,636 GBP|-0.3%
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 9£1,778 GBP
Retailer 12£2,034 GBP
Retailer 4£2,066 GBP
Retailer 7£2,155 GBP
Retailer 2£2,185 GBP
Retailer 5£2,251 GBP
Retailer 3£2,344 GBP
Retailer 8£2,375 GBP
Retailer 13£2,418 GBP
Retailer 10£2,606 GBP
Retailer 11£2,731 GBP
Retailer 6£3,723 GBP
Queensmith£4,436 GBP

24 data points across 13 retailers

14 retailers£1,778 GBP to £3,723 GBP

A
Cheapest Retailer
-
£1,778 GBP
B+
Retailer 2
-
£2,034 GBP
View
B+
Retailer 3
-
£2,066 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,070 GBP
View
B+
Retailer 5
-
£2,155 GBP
View
B+
Retailer 6
-
£2,185 GBP
View
Retailer 7
-
£2,251 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£2,344 GBP
View
B+
Retailer 9
-
£2,375 GBP
View
B+
Retailer 10
-
£2,418 GBP
View
B+
Retailer 11
-
£2,606 GBP
View
B+
Retailer 12
-
£2,731 GBP
View
B
Retailer 13
-
£3,723 GBP
View
Most Expensive
Queensmith
6542610072 · Oct 28
£4,436 GBP
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from £1,778 GBPSave up to £1,945 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
1.21ct Cushion
£1,778 GBP