Radiant|Natural|GIA

1.00ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2235918611

Certificate GIA 2235918611

Diamond specifications and retailer prices

From £1,290 GBP
As of November 4, 2026
Save £1,157 GBP (47%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,408 GBP at NZ Jewellers · As of September 20, 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 2235918611. Listed at 11 retailers as of November 2, 2026, with a 90% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2235918611
Dimensions7.17 × 4.86 × 3.26 mm
L/W Ratio1.48
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Indented Natural, Natural
Top View
7.17 mm4.86 mm1.00 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235918611
Side View
Table 67.0%CrownGirdlePavilionCulet: NoneDepth 67.0%

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 4
Current: £1,705 GBP|Low: £1,182 GBP|High: £2,477 GBP|Avg: £1,642 GBP|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 2£1,273 GBP
Retailer 8£1,290 GBP
Retailer 7£1,345 GBP
Retailer 6£1,397 GBP
Retailer 3£1,517 GBP
Retailer 1£1,705 GBP
Retailer 10£1,736 GBP
Retailer 9£1,824 GBP
Retailer 4£1,900 GBP
Retailer 5£2,447 GBP

30 data points across 10 retailers

11 retailers£1,290 GBP to £2,447 GBP

B+
Cheapest Retailer
-
£1,290 GBP
Final sale: no returns
B+
Retailer 2
-
£1,345 GBP
View
Retailer 3
-
£1,397 GBP
View
Price last confirmed 46 days ago
Retailer 4
-
£1,397 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£1,517 GBP
View
Retailer 6
-
£1,612 GBP
View
Price last confirmed 44 days ago
B+
Retailer 7
-
£1,705 GBP
View
Retailer 8
-
£1,824 GBP
View
Price last confirmed 36 days ago
B
Retailer 9
-
£1,900 GBP
View
B
Retailer 10
-
£2,447 GBP
View
Most Expensive
NZ Jewellers
70765265-9959-4703-bdf8-e38c934b7724 · Sep 20
£3,408 GBP
$4,561 USD
View
Price last confirmed 47 days ago
10 more retailers have this diamond
Prices start from £1,290 GBPSave up to £1,157 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
£1,290 GBP