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Cushion|Natural|GIA

1.20ct K SI2 Cushion Natural Diamond

K/SI2 • GIA 6555120450

Shape and cutting style on the report: Old miner

Certificate GIA 6555120450

Diamond specifications and retailer prices

From £1,980 GBP
$2,650 USD
As of November 6, 2026
2 retailers carry this diamond
Most expensive: £1,980 GBP at Brilliant Earth
View at Brilliant Earth

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included) and certified by GIA 6555120450. Listed at 2 retailers as of November 6, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
K
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555120450
Dimensions7.71 × 5.31 × 3.46 mm
L/W Ratio1.45
Top View
7.71 mm5.31 mm1.20 ctK / SI2
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555120450
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 65.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £1,980 GBP|Low: £1,771 GBP|High: £2,333 GBP|Avg: £2,028 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 19, 2026
Retailer 3£1,771 GBP
Retailer 2£1,850 GBP
Retailer 5£1,974 GBP
Brilliant Earth£1,980 GBP
Retailer 6£1,991 GBP
Retailer 4£2,333 GBP

8 data points across 6 retailers

2 retailers

Retailer 1
-
£1,974 GBP
Price last confirmed 36 days ago
Most Expensive
B
Brilliant Earth
21541741A · Nov 6
£1,980 GBP
$2,650 USD
View
1 more retailer has this diamond

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
1.20ct Cushion
£1,980 GBP