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Cushion|Natural|GIA

1.22ct D SI2 Cushion Natural Diamond

ID • D/SI2 • GIA 1559890508

Certificate GIA 1559890508

Diamond specifications and retailer prices

From £2,759 GBP
A$5,688 AUD
As of October 31, 2026
3 retailers carry this diamond
Most expensive: £2,970 GBP at Brilliant Earth · As of September 21, 2026
View at Brilliant Earth

About this 1.22ct natural cushion diamond

This 1.22ct natural cushion sits in the classic one-carat band, graded D 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 1559890508. Listed at 3 retailers as of October 31, 2026. 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

1.22
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1559890508
Dimensions7.61 × 5.25 × 3.53 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
7.61 mm5.25 mm1.22 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1559890508
Side View
Table 65.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 67.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £2,970 GBP|Low: £2,216 GBP|High: £4,772 GBP|Avg: £2,894 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
September 22, 2026
Retailer 11£2,216 GBP
Retailer 4£2,266 GBP
Retailer 8£2,396 GBP
Retailer 6£2,600 GBP
Retailer 3£2,694 GBP
Retailer 9£2,759 GBP
Retailer 2£2,872 GBP
Retailer 10£2,942 GBP
Brilliant Earth£2,970 GBP
Retailer 5£4,737 GBP
Retailer 7£4,772 GBP

6 data points across 11 retailers

3 retailers

Retailer 1
-
£2,216 GBP
HK$23,200 HKD
Price last confirmed 56 days ago
B
Retailer 2
-
£2,759 GBP
A$5,688 AUD
View
Most Expensive
Brilliant Earth
21015259A · Sep 21
£2,970 GBP
$3,980 USD
View
Price last confirmed 40 days ago
2 more retailers have this diamond
Prices start from £2,759 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
1.22ct Cushion
£2,759 GBP