Radiant|Natural|GIA

1.20ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 2556145465

Certificate GIA 2556145465

Diamond specifications and retailer prices

From £2,122 GBP
$2,847 USD
As of November 1, 2026
Save £130 GBP (6%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,344 GBP at Queensmith · As of October 9, 2026
View at Queensmith

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant 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 2556145465. Listed at 14 retailers as of November 1, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.20
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556145465
Dimensions6.77 × 5.31 × 3.79 mm
L/W Ratio1.27
Top View
6.77 mm5.31 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556145465
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £4,344 GBP|Low: £1,744 GBP|High: £4,344 GBP|Avg: £2,496 GBP|+0.8%
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
Retailer 14
Retailer 15
Retailer 16
October 10, 2026
Retailer 4£1,744 GBP
Retailer 11£1,911 GBP
Retailer 16£2,061 GBP
Retailer 8£2,087 GBP
Retailer 3£2,122 GBP
Retailer 9£2,124 GBP
Retailer 6£2,161 GBP
Retailer 5£2,251 GBP
Retailer 10£2,350 GBP
Retailer 12£2,363 GBP
Retailer 13£2,440 GBP
Retailer 7£2,641 GBP
Retailer 2£2,654 GBP
Retailer 14£2,744 GBP
Retailer 15£3,852 GBP
Queensmith£4,344 GBP

20 data points across 16 retailers

14 retailers£2,122 GBP to £2,251 GBP

Retailer 1
-
£2,061 GBP
$2,766 USD
Price last confirmed 32 days ago
Retailer 2
-
£2,087 GBP
$2,800 USD
View
Price last confirmed 27 days ago
A
Retailer 3
-
£2,122 GBP
$2,847 USD
View
Retailer 4
-
£2,141 GBP
$2,873 USD
View
Price last confirmed 33 days ago
Retailer 5
-
£2,161 GBP
$2,900 USD
View
Price last confirmed 24 days ago
B+
Retailer 6
-
£2,251 GBP
A$4,648 AUD
View
Retailer 7
-
£2,363 GBP
$3,171 USD
View
Price last confirmed 26 days ago
Retailer 8
-
£2,379 GBP
$3,192 USD
View
Price last confirmed 35 days ago
Retailer 9
-
£2,440 GBP
A$5,037 AUD
View
Price last confirmed 30 days ago
Retailer 10
-
£2,641 GBP
$3,544 USD
View
Price last confirmed 27 days ago
Retailer 11
-
£2,744 GBP
ZAR 59,483 ZAR
View
Price last confirmed 33 days ago
Retailer 12
-
£3,852 GBP
View
Price last confirmed 28 days ago
Retailer 13
-
£3,964 GBP
$5,320 USD
View
Price last confirmed 34 days ago
Most Expensive
Queensmith
2556145465 · Oct 9
£4,344 GBP
View
Price last confirmed 24 days ago
13 more retailers have this diamond
Prices start from £2,122 GBPSave up to £130 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
£2,122 GBP