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Radiant|Natural|GIA

1.54ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 6521237639

Certificate GIA 6521237639

Diamond specifications and retailer prices

From £4,124 GBP
As of November 5, 2026
Save £4,706 GBP (53%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £8,830 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.54ct natural radiant diamond

This 1.54ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6521237639. Listed at 23 retailers as of November 5, 2026, with prices from £4,124 to £8,830, a £4,706 spread on the same certified stone. NZ Jewellers lists it at £8,830. 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

1.54
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.7°
Pavilion angle58°
OriginNatural
Grading LabGIA
CertificateGIA 6521237639
Dimensions7.80 × 5.73 × 3.98 mm
L/W Ratio1.36
Top View
7.80 mm5.73 mm1.54 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521237639
Side View
Table 66.0%Crown 47.7°Girdle: ThickPavilion 58°Culet: NoneDepth 69.4%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £4,737 GBP|Low: £3,827 GBP|High: £7,872 GBP|Avg: £5,232 GBP|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 12£4,016 GBP
Retailer 3£4,171 GBP
Retailer 6£4,372 GBP
Retailer 2£4,452 GBP
Retailer 1£4,737 GBP
Retailer 4£4,783 GBP
Retailer 5£5,013 GBP
Retailer 11£5,124 GBP
Retailer 8£5,466 GBP
Retailer 7£5,681 GBP
Retailer 9£6,442 GBP
Retailer 10£7,757 GBP

44 data points across 12 retailers

23 retailers£4,124 GBP to £8,830 GBP

Retailer 1
-
£4,016 GBP
Price last confirmed 17 days ago
B+
Retailer 2
-
£4,124 GBP
View
B+
Retailer 3
-
£4,171 GBP
View
B+
Retailer 4
-
£4,333 GBP
View
B+
Retailer 5
-
£4,372 GBP
View
Final sale: no returns
B+
Retailer 6
-
£4,445 GBP
View
B+
Retailer 7
-
£4,452 GBP
View
B+
Retailer 8
-
£4,711 GBP
View
B+
Retailer 9
-
£4,737 GBP
View
Retailer 10
-
£4,783 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£4,783 GBP
View
B+
Retailer 12
-
£4,870 GBP
View
B+
Retailer 13
-
£5,013 GBP
View
Retailer 14
-
£5,124 GBP
View
Price last confirmed 16 days ago
B
Retailer 15
-
£5,222 GBP
View
B
Retailer 16
-
£5,222 GBP
View
B
Retailer 17
-
£5,402 GBP
View
B
Retailer 18
-
£5,466 GBP
View
B
Retailer 19
-
£5,681 GBP
View
Retailer 20
-
£5,819 GBP
View
Price last confirmed 15 days ago
B
Retailer 21
-
£6,442 GBP
View
B
Retailer 22
-
£7,757 GBP
View
Most Expensive
B
NZ Jewellers
76855504-8ee5-480c-bfda-7260f7470123 · Nov 5
£8,830 GBP
$11,819 USD
View
22 more retailers have this diamond
Prices start from £4,124 GBPSave up to £4,706 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+
1.54ct Radiant
£4,124 GBP