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Radiant|Natural|GIA

1.00ct H SI1 Radiant Natural Diamond

GD • H/SI1 • GIA 1393469894

Certificate GIA 1393469894

Diamond specifications and retailer prices

From £1,205 GBP
As of November 6, 2026
Save £1,984 GBP (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,189 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1393469894. Listed at 19 retailers as of November 5, 2026, with prices from £1,205 to £3,189, a £1,984 spread on the same certified stone. NZ Jewellers lists it at £3,189. 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

1.00
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1393469894
Dimensions6.50 × 5.40 × 3.21 mm
L/W Ratio1.20
Culet sizeNone
Key to symbols
Crystal, Cloud, Indented Natural, Feather, Cavity, Needle, Natural
Top View
6.50 mm5.40 mm1.00 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1393469894
Side View
Table 79.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 59.4%

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 6
Current: £3,189 GBP|Low: £1,205 GBP|High: £3,189 GBP|Avg: £1,825 GBP
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£1,205 GBP
Retailer 13£1,420 GBP
Retailer 8£1,445 GBP
Retailer 4£1,505 GBP
Retailer 3£1,526 GBP
Retailer 15£1,526 GBP
Retailer 14£1,596 GBP
Retailer 2£1,650 GBP
Retailer 12£1,682 GBP
Retailer 5£1,760 GBP
Retailer 10£1,862 GBP
Retailer 7£1,881 GBP
Retailer 9£2,072 GBP
Retailer 11£2,602 GBP
NZ Jewellers£3,189 GBP

37 data points across 15 retailers

19 retailers£1,205 GBP to £3,189 GBP

B+
Cheapest Retailer
-
£1,205 GBP
Final sale: no returns
B+
Retailer 2
-
£1,339 GBP
View
Retailer 3
-
£1,420 GBP
View
Price last confirmed 10 days ago
B+
Retailer 4
-
£1,445 GBP
View
B+
Retailer 5
-
£1,489 GBP
View
B+
Retailer 6
-
£1,505 GBP
View
B+
Retailer 7
-
£1,526 GBP
View
Retailer 8
-
£1,526 GBP
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£1,550 GBP
View
B+
Retailer 10
-
£1,596 GBP
View
B+
Retailer 11
-
£1,629 GBP
View
B+
Retailer 12
-
£1,650 GBP
View
B+
Retailer 13
-
£1,682 GBP
View
B
Retailer 14
-
£1,760 GBP
View
B
Retailer 15
-
£1,862 GBP
View
Retailer 16
-
£1,881 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
£2,072 GBP
View
B
Retailer 18
-
£2,602 GBP
View
Most Expensive
C
NZ Jewellers
a5ac7d92-9d82-4eee-abe1-c9df9a2c399e · Nov 5
£3,189 GBP
$4,269 USD
View
18 more retailers have this diamond
Prices start from £1,205 GBPSave up to £1,984 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+
1.00ct Radiant
£1,205 GBP