CaratHunter
Plans
Radiant|Natural|GIA

1.00ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 7453410385

Certificate GIA 7453410385

Diamond specifications and retailer prices

From £841 GBP
HK$8,800 HKD
As of November 1, 2026
Save £1,766 GBP (68%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £2,606 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 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 7453410385. Listed at 25 retailers as of October 30, 2026, with prices from £841 to £2,606, a £1,766 spread on the same certified stone. NZ Jewellers lists it at £2,606. 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

1.00
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.01°
Pavilion angle54.52°
OriginNatural
Grading LabGIA
CertificateGIA 7453410385
Dimensions6.61 × 5.09 × 3.55 mm
L/W Ratio1.30
Top View
6.61 mm5.09 mm1.00 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7453410385
Side View
Table 67.0%Crown 40.01°Girdle: MED-STKPavilion 54.52°Culet: NoneDepth 69.7%

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: Nov 1
Current: £850 GBP|Low: £841 GBP|High: £1,895 GBP|Avg: £1,229 GBP|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 5£841 GBP
Retailer 1£850 GBP
Retailer 9£986 GBP
Retailer 2£1,042 GBP
Retailer 8£1,176 GBP
Retailer 4£1,181 GBP
Retailer 7£1,304 GBP
Retailer 6£1,488 GBP
Retailer 3£1,872 GBP

26 data points across 9 retailers

25 retailers£841 GBP to £2,606 GBP

A
Cheapest Retailer
-
£841 GBP
HK$8,800 HKD
A
Retailer 2
-
£850 GBP
₹108,446 INR
View
A
Retailer 3
-
£948 GBP
$1,270 USD
View
A
Retailer 4
-
£970 GBP
$1,300 USD
View
A
Retailer 5
-
£986 GBP
$1,321 USD
View
Final sale: no returns
A
Retailer 6
-
£990 GBP
$1,327 USD
View
A
Retailer 7
-
£1,042 GBP
View
A
Retailer 8
-
£1,069 GBP
$1,432 USD
View
A
Retailer 9
-
£1,069 GBP
$1,432 USD
View
A
Retailer 10
-
£1,105 GBP
$1,480 USD
View
A
Retailer 11
-
£1,118 GBP
$1,498 USD
View
A
Retailer 12
-
£1,142 GBP
$1,530 USD
View
B+
Retailer 13
-
£1,170 GBP
$1,567 USD
View
B+
Retailer 14
-
£1,170 GBP
SGD 2,119 SGD
View
A
Retailer 15
-
£1,176 GBP
$1,576 USD
View
A
Retailer 16
-
£1,181 GBP
View
B+
Retailer 17
-
£1,184 GBP
$1,586 USD
View
B+
Retailer 18
-
£1,185 GBP
$1,588 USD
View
B+
Retailer 19
-
£1,233 GBP
$1,652 USD
View
B+
Retailer 20
-
£1,304 GBP
ZAR 28,230 ZAR
View
Retailer 21
-
£1,394 GBP
A$2,874 AUD
View
Price last confirmed 27 days ago
B+
Retailer 22
-
£1,488 GBP
€1,899 EUR
View
B
Retailer 23
-
£1,575 GBP
$2,110 USD
View
B
Retailer 24
-
£1,872 GBP
View
Most Expensive
B
NZ Jewellers
ecfbdb91-2f60-416a-b625-deba8701c916 · Oct 30
£2,606 GBP
$3,492 USD
View
24 more retailers have this diamond
Prices start from £841 GBPSave up to £1,766 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
£841 GBP