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Cushion|Natural|GIA

1.21ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 16776694

Certificate GIA 16776694

Diamond specifications and retailer prices

From £3,503 GBP
As of November 4, 2026
Save £3,012 GBP (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £6,516 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 16776694. Listed at 12 retailers as of November 4, 2026, with prices from £3,503 to £6,516, a £3,012 spread on the same certified stone. MOH London lists it at £6,516. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 16776694
Dimensions6.93 × 5.94 × 3.65 mm
L/W Ratio1.17
Culet sizeNone
Top View
6.93 mm5.94 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 16776694
Side View
Table 63.0%CrownGirdle: XTN-VTKPavilionCulet: NoneDepth 61.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £6,516 GBP|Low: £3,399 GBP|High: £6,611 GBP|Avg: £4,668 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£3,503 GBP
Retailer 7£3,708 GBP
Retailer 10£3,765 GBP
Retailer 5£4,017 GBP
Retailer 2£4,283 GBP
Retailer 9£4,441 GBP
Retailer 6£4,589 GBP
Retailer 3£4,634 GBP
Retailer 11£4,891 GBP
Retailer 4£5,410 GBP
MOH London£6,516 GBP

37 data points across 11 retailers

12 retailers£3,503 GBP to £6,516 GBP

B
Cheapest Retailer
-
£3,503 GBP
B
Retailer 2
-
£3,708 GBP
View
Final sale: no returns
B
Retailer 3
-
£3,765 GBP
View
B
Retailer 4
-
£3,768 GBP
View
Retailer 5
-
£4,017 GBP
View
Price last confirmed 13 days ago
B
Retailer 6
-
£4,283 GBP
View
B
Retailer 7
-
£4,380 GBP
View
Retailer 8
-
£4,441 GBP
View
Price last confirmed 29 days ago
Retailer 9
-
£4,589 GBP
View
Price last confirmed 10 days ago
Retailer 10
-
£4,891 GBP
View
Price last confirmed 15 days ago
B
Retailer 11
-
£5,410 GBP
View
Most Expensive
B
MOH London
F577A9898 · Nov 4
£6,516 GBP
View
11 more retailers have this diamond
Prices start from £3,503 GBPSave up to £3,012 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.

B
1.21ct Cushion
£3,503 GBP