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Radiant|Natural|GIA

1.25ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 7556386352

Certificate GIA 7556386352

Diamond specifications and retailer prices

From £1,820 GBP
As of November 7, 2026
Save £2,282 GBP (56%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,102 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.25ct natural radiant diamond

This 1.25ct natural radiant sits in the one-and-a-quarter to one-and-a-half 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 7556386352. Listed at 9 retailers as of November 5, 2026, with prices from £1,820 to £4,102, a £2,282 spread on the same certified stone. NZ Jewellers lists it at £4,102. 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

1.25
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle56°
OriginNatural
Grading LabGIA
CertificateGIA 7556386352
Dimensions7.23 × 5.45 × 3.77 mm
L/W Ratio1.33
Key to symbols
Crystal, Needle, Cloud
Top View
7.23 mm5.45 mm1.25 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556386352
Side View
Table 64.0%CrownGirdle: MED-STKPavilion 56°Culet: NoneDepth 69.2%

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 7
Current: £4,102 GBP|Low: £1,387 GBP|High: £4,102 GBP|Avg: £2,428 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
November 5, 2026
Retailer 4£1,387 GBP
Retailer 12£1,820 GBP
Retailer 3£1,842 GBP
Retailer 10£2,010 GBP
Retailer 11£2,108 GBP
Retailer 7£2,111 GBP
Retailer 6£2,173 GBP
Retailer 9£2,432 GBP
Retailer 8£2,515 GBP
Retailer 2£2,874 GBP
Retailer 5£3,927 GBP
NZ Jewellers£4,102 GBP

26 data points across 12 retailers

9 retailers£1,820 GBP to £4,102 GBP

Retailer 1
-
£1,387 GBP
Price last confirmed 64 days ago
A
Retailer 2
-
£1,820 GBP
View
A
Retailer 3
-
£2,108 GBP
View
A
Retailer 4
-
£2,111 GBP
View
B+
Retailer 5
-
£2,173 GBP
View
Final sale: no returns
Retailer 6
-
£2,515 GBP
View
Price last confirmed 31 days ago
B+
Retailer 7
-
£2,874 GBP
View
B
Retailer 8
-
£3,927 GBP
View
Most Expensive
B
NZ Jewellers
0ecd575d-4506-4c7a-94e4-4988bcf95470 · Nov 5
£4,102 GBP
$5,491 USD
View
8 more retailers have this diamond
Prices start from £1,820 GBPSave up to £2,282 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
1.25ct Radiant
£1,820 GBP