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Radiant|Natural|GIA

1.20ct K SI2 Radiant Natural Diamond

VG • K/SI2 • GIA 3555133018

Certificate GIA 3555133018

Diamond specifications and retailer prices

From £1,143 GBP
As of November 6, 2026
Save £463 GBP (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,606 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3555133018. Listed at 2 retailers as of November 5, 2026, with prices from £1,143 to £1,606, a £463 spread on the same certified stone. Blue Nile lists it at £1,606. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555133018
Dimensions7.69 × 4.88 × 3.20 mm
L/W Ratio1.58
Top View
7.69 mm4.88 mm1.20 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 3555133018
Side View
Table 66.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 65.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,606 GBP|Low: £1,143 GBP|High: £1,765 GBP|Avg: £1,410 GBP|-9.0%
Blue Nile
Retailer 2
November 6, 2026
Retailer 2£1,143 GBP
Blue Nile£1,606 GBP

44 data points across 2 retailers

2 retailers£1,143 GBP to £1,606 GBP

A
Cheapest Retailer
-
£1,143 GBP
Most Expensive
B
Blue Nile
29993290 · Nov 5
£1,606 GBP
$2,150 USD
View
1 more retailer has this diamond
Prices start from £1,143 GBPSave up to £463 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 Radiant
£1,143 GBP