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Radiant|Natural|GIA

1.20ct E SI1 Radiant Natural Diamond

VG • E/SI1 • GIA 6551653089

Certificate GIA 6551653089

Diamond specifications and retailer prices

From £1,788 GBP
As of November 6, 2026
Save £2,159 GBP (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,531 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551653089. Listed at 21 retailers as of November 4, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551653089
Dimensions7.03 × 5.42 × 3.77 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.03 mm5.42 mm1.20 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551653089
Side View
Table 72.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.5%

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: £4,531 GBP|Low: £1,769 GBP|High: £4,616 GBP|Avg: £2,660 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
November 7, 2026
Retailer 12£1,788 GBP
Retailer 6£1,862 GBP
Retailer 5£2,130 GBP
Retailer 10£2,167 GBP
Retailer 4£2,184 GBP
Retailer 13£2,279 GBP
Retailer 2£2,448 GBP
Retailer 3£2,474 GBP
Retailer 7£2,480 GBP
Retailer 8£2,755 GBP
Retailer 9£2,888 GBP
Retailer 11£3,947 GBP
Queensmith£4,531 GBP

29 data points across 13 retailers

21 retailers£1,788 GBP to £3,947 GBP

A
Cheapest Retailer
-
£1,788 GBP
A
Retailer 2
-
£1,862 GBP
View
A
Retailer 3
-
£2,130 GBP
View
A
Retailer 4
-
£2,167 GBP
View
A
Retailer 5
-
£2,184 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,279 GBP
View
B+
Retailer 7
-
£2,281 GBP
View
B+
Retailer 8
-
£2,422 GBP
View
B+
Retailer 9
-
£2,448 GBP
View
Retailer 10
-
£2,465 GBP
View
Price last confirmed 30 days ago
Retailer 11
-
£2,465 GBP
View
Price last confirmed 30 days ago
B+
Retailer 12
-
£2,474 GBP
View
B+
Retailer 13
-
£2,480 GBP
View
Retailer 14
-
£2,560 GBP
View
Price last confirmed 38 days ago
Retailer 15
-
£2,634 GBP
View
Price last confirmed 31 days ago
B+
Retailer 16
-
£2,755 GBP
View
Retailer 17
-
£2,845 GBP
View
Price last confirmed 29 days ago
B+
Retailer 18
-
£2,888 GBP
View
B
Retailer 19
-
£3,947 GBP
View
Retailer 20
-
£4,296 GBP
View
Price last confirmed 38 days ago
Most Expensive
Queensmith
6551653089 · Oct 28
£4,531 GBP
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from £1,788 GBPSave up to £2,159 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
£1,788 GBP