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Radiant|Natural|GIA

1.20ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 2544104275

Certificate GIA 2544104275

Diamond specifications and retailer prices

From £2,389 GBP
As of November 6, 2026
Save £2,446 GBP (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,835 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded H 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 2544104275. Listed at 16 retailers as of November 5, 2026, with prices from £2,389 to £4,835, a £2,446 spread on the same certified stone. NZ Jewellers lists it at £4,835. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.68°
Pavilion angle35.38°
OriginNatural
Grading LabGIA
CertificateGIA 2544104275
Dimensions6.90 × 5.32 × 3.66 mm
L/W Ratio1.30
Top View
6.90 mm5.32 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2544104275
Side View
Table 70.0%Crown 49.68°Girdle: THK-VTKPavilion 35.38°Culet: NoneDepth 68.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,835 GBP|Low: £2,389 GBP|High: £5,087 GBP|Avg: £3,229 GBP|-5.0%
NZ Jewellers
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
November 7, 2026
Retailer 6£2,389 GBP
Retailer 4£2,483 GBP
Retailer 11£2,595 GBP
Retailer 5£2,721 GBP
Retailer 7£2,760 GBP
Retailer 13£2,760 GBP
Retailer 3£2,876 GBP
Retailer 14£2,876 GBP
Retailer 2£2,900 GBP
Retailer 15£2,973 GBP
Retailer 9£3,231 GBP
Retailer 8£3,311 GBP
Retailer 12£4,047 GBP
Retailer 10£4,628 GBP
NZ Jewellers£4,835 GBP

43 data points across 15 retailers

16 retailers£2,389 GBP to £4,835 GBP

B+
Cheapest Retailer
-
£2,389 GBP
B+
Retailer 2
-
£2,483 GBP
View
B+
Retailer 3
-
£2,595 GBP
View
B+
Retailer 4
-
£2,721 GBP
View
B
Retailer 5
-
£2,760 GBP
View
B
Retailer 6
-
£2,760 GBP
View
B
Retailer 7
-
£2,876 GBP
View
B
Retailer 8
-
£2,876 GBP
View
B+
Retailer 9
-
£2,900 GBP
View
B
Retailer 10
-
£2,937 GBP
View
B
Retailer 11
-
£2,973 GBP
View
B
Retailer 12
-
£3,231 GBP
View
B
Retailer 13
-
£3,311 GBP
View
B
Retailer 14
-
£4,047 GBP
View
B
Retailer 15
-
£4,628 GBP
View
Most Expensive
B
NZ Jewellers
0da86508-7b38-4199-9245-ee2a9cc9c6e4 · Nov 5
£4,835 GBP
$6,471 USD
View
15 more retailers have this diamond
Prices start from £2,389 GBPSave up to £2,446 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+
1.20ct Radiant
£2,389 GBP