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Radiant|Natural|GIA

1.00ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 1423827962

Certificate GIA 1423827962

Diamond specifications and retailer prices

From £1,032 GBP
HK$10,800 HKD
As of October 31, 2026
Save £2,278 GBP (69%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £3,310 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded I 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 1423827962. Listed at 28 retailers as of October 30, 2026, with prices from £1,032 to £3,310, a £2,278 spread on the same certified stone. NZ Jewellers lists it at £3,310. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1423827962
Dimensions6.14 × 5.01 × 3.44 mm
L/W Ratio1.23
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural, Natural
Top View
6.14 mm5.01 mm1.00 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1423827962
Side View
Table 70.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.7%

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: Oct 31
Current: £1,324 GBP|Low: £1,032 GBP|High: £2,407 GBP|Avg: £1,530 GBP|-1.4%
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 1, 2026
Retailer 7£1,032 GBP
Retailer 10£1,093 GBP
Retailer 4£1,127 GBP
Retailer 12£1,153 GBP
Retailer 2£1,287 GBP
Retailer 1£1,324 GBP
Retailer 6£1,509 GBP
Retailer 9£1,559 GBP
Retailer 11£1,653 GBP
Retailer 3£1,771 GBP
Retailer 8£1,854 GBP
Retailer 5£2,378 GBP

32 data points across 12 retailers

28 retailers£1,032 GBP to £3,310 GBP

B+
Cheapest Retailer
-
£1,032 GBP
HK$10,800 HKD
A
Retailer 2
-
£1,093 GBP
$1,465 USD
View
B+
Retailer 3
-
£1,097 GBP
$1,470 USD
View
B+
Retailer 4
-
£1,123 GBP
$1,505 USD
View
B+
Retailer 5
-
£1,127 GBP
$1,510 USD
View
Final sale: no returns
Retailer 6
-
£1,153 GBP
$1,545 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
£1,171 GBP
$1,569 USD
View
B+
Retailer 8
-
£1,186 GBP
$1,589 USD
View
B+
Retailer 9
-
£1,216 GBP
$1,629 USD
View
B+
Retailer 10
-
£1,229 GBP
$1,647 USD
View
B+
Retailer 11
-
£1,229 GBP
$1,647 USD
View
B+
Retailer 12
-
£1,286 GBP
$1,723 USD
View
B+
Retailer 13
-
£1,287 GBP
$1,725 USD
View
B+
Retailer 14
-
£1,324 GBP
View
B+
Retailer 15
-
£1,363 GBP
$1,826 USD
View
B+
Retailer 16
-
£1,419 GBP
$1,901 USD
View
B+
Retailer 17
-
£1,448 GBP
$1,940 USD
View
B+
Retailer 18
-
£1,448 GBP
$1,940 USD
View
B+
Retailer 19
-
£1,493 GBP
$2,000 USD
View
B+
Retailer 20
-
£1,509 GBP
View
B+
Retailer 21
-
£1,559 GBP
CA$2,901 CAD
View
B+
Retailer 22
-
£1,627 GBP
$2,180 USD
View
B+
Retailer 23
-
£1,653 GBP
ZAR 35,771 ZAR
View
Retailer 24
-
£1,771 GBP
A$3,651 AUD
View
Price last confirmed 27 days ago
B
Retailer 25
-
£1,854 GBP
€2,366 EUR
View
B
Retailer 26
-
£1,944 GBP
$2,605 USD
View
B
Retailer 27
-
£2,378 GBP
View
Most Expensive
C
NZ Jewellers
a5a2f86b-393c-4802-b9f6-c6f23ea67717 · Oct 30
£3,310 GBP
$4,435 USD
View
27 more retailers have this diamond
Prices start from £1,032 GBPSave up to £2,278 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
1.00ct Radiant
£1,032 GBP