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Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 7548286172

Certificate GIA 7548286172

Diamond specifications and retailer prices

From £985 GBP
As of November 6, 2026
Save £1,399 GBP (59%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,365 GBP at NZ Jewellers · As of September 30, 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 J 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 7548286172. Listed at 19 retailers as of November 2, 2026, with a 142% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7548286172
Dimensions6.89 × 5.29 × 3.70 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Needle, Indented Natural
Top View
6.89 mm5.29 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7548286172
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,447 GBP|Low: £985 GBP|High: £2,439 GBP|Avg: £1,500 GBP|-2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 5£985 GBP
Retailer 4£1,040 GBP
Retailer 8£1,203 GBP
Retailer 9£1,290 GBP
Retailer 3£1,360 GBP
Retailer 6£1,372 GBP
Retailer 1£1,447 GBP
Retailer 2£1,668 GBP
Retailer 7£1,771 GBP
Retailer 10£2,384 GBP

32 data points across 10 retailers

19 retailers£985 GBP to £2,384 GBP

A
Cheapest Retailer
-
£985 GBP
A
Retailer 2
-
£1,040 GBP
View
A
Retailer 3
-
£1,203 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,290 GBP
View
A
Retailer 5
-
£1,302 GBP
View
A
Retailer 6
-
£1,304 GBP
View
A
Retailer 7
-
£1,360 GBP
View
A
Retailer 8
-
£1,372 GBP
View
Retailer 9
-
£1,380 GBP
View
Price last confirmed 30 days ago
Retailer 10
-
£1,380 GBP
View
Price last confirmed 30 days ago
Retailer 11
-
£1,443 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£1,447 GBP
View
B+
Retailer 13
-
£1,480 GBP
View
Retailer 14
-
£1,592 GBP
View
Price last confirmed 29 days ago
Retailer 15
-
£1,668 GBP
View
Price last confirmed 12 days ago
B+
Retailer 16
-
£1,771 GBP
View
Retailer 17
-
£1,800 GBP
View
Price last confirmed 33 days ago
B
Retailer 18
-
£2,384 GBP
View
Most Expensive
NZ Jewellers
1f2a95a9-fe07-47c0-9727-c1747871d050 · Sep 30
£3,365 GBP
$4,504 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from £985 GBPSave up to £1,399 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
£985 GBP