CaratHunter
Plans
Radiant|Natural|GIA

1.01ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 2557812240

Certificate GIA 2557812240

Diamond specifications and retailer prices

From £1,759 GBP
As of November 6, 2026
Save £1,707 GBP (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,274 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.01ct natural radiant diamond

This 1.01ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557812240. Listed at 16 retailers as of November 4, 2026, with a 97% 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle52.31°
Pavilion angle30.09°
OriginNatural
Grading LabGIA
CertificateGIA 2557812240
Dimensions4.69 × 7.12 × 3.22 mm
L/W Ratio1.52
Culet sizeNone
Key to symbols
Crystal, Cloud, Knot, Feather, Needle
Top View
4.69 mm7.12 mm1.01 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557812240
Side View
Table 67.0%Crown 52.31°Girdle: STK-THKPavilion 30.09°Culet: 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: Nov 6
Current: £1,778 GBP|Low: £1,473 GBP|High: £3,625 GBP|Avg: £2,199 GBP|-11.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 5£1,759 GBP
Retailer 1£1,778 GBP
Retailer 4£1,812 GBP
Retailer 8£1,876 GBP
Retailer 2£1,980 GBP
Retailer 10£2,044 GBP
Retailer 3£2,078 GBP
Retailer 7£2,089 GBP
Retailer 9£2,291 GBP
Retailer 6£3,466 GBP

45 data points across 10 retailers

16 retailers£1,759 GBP to £3,466 GBP

A
Cheapest Retailer
-
£1,759 GBP
A
Retailer 2
-
£1,778 GBP
View
A
Retailer 3
-
£1,812 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,876 GBP
View
A
Retailer 5
-
£1,980 GBP
View
Retailer 6
-
£2,044 GBP
View
Price last confirmed 37 days ago
Retailer 7
-
£2,044 GBP
View
Price last confirmed 22 days ago
A
Retailer 8
-
£2,078 GBP
View
B+
Retailer 9
-
£2,089 GBP
View
Retailer 10
-
£2,123 GBP
View
Price last confirmed 38 days ago
Retailer 11
-
£2,291 GBP
View
Price last confirmed 31 days ago
Retailer 12
-
£2,359 GBP
View
Price last confirmed 62 days ago
Retailer 13
-
£2,359 GBP
View
Price last confirmed 39 days ago
Retailer 14
-
£2,359 GBP
View
Price last confirmed 53 days ago
B
Retailer 15
-
£3,466 GBP
View
Most Expensive
NZ Jewellers
8745b152-c77d-4b17-94a5-a33cef344093 · Sep 30
£4,274 GBP
$5,721 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from £1,759 GBPSave up to £1,707 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
1.01ct Radiant
£1,759 GBP