CaratHunter
Plans
Radiant|Natural|GIA

1.00ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 5556716132

Certificate GIA 5556716132

Diamond specifications and retailer prices

From £1,090 GBP
As of November 6, 2026
Save £1,455 GBP (57%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,219 GBP at NZ Jewellers · As of October 11, 2026
View at NZ Jewellers

About this 1ct natural radiant diamond

This 1ct natural radiant sits in the classic one-carat band, graded H 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 5556716132. Listed at 23 retailers as of November 6, 2026, with a 134% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556716132
Dimensions6.71 × 5.08 × 3.49 mm
L/W Ratio1.32
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Natural
Top View
6.71 mm5.08 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5556716132
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.8%

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: £2,545 GBP|Low: £1,080 GBP|High: £3,240 GBP|Avg: £1,704 GBP|-3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 7, 2026
Retailer 14£1,090 GBP
Retailer 10£1,151 GBP
Retailer 5£1,348 GBP
Retailer 4£1,362 GBP
Retailer 8£1,405 GBP
Retailer 6£1,406 GBP
Retailer 12£1,428 GBP
Retailer 7£1,521 GBP
Retailer 3£1,563 GBP
Retailer 9£1,586 GBP
Retailer 15£1,611 GBP
Retailer 13£1,783 GBP
Retailer 11£1,984 GBP
Retailer 1£2,545 GBP
Retailer 2£3,211 GBP

27 data points across 15 retailers

23 retailers£1,090 GBP to £2,545 GBP

A
Cheapest Retailer
-
£1,090 GBP
A
Retailer 2
-
£1,151 GBP
View
A
Retailer 3
-
£1,348 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,362 GBP
View
A
Retailer 5
-
£1,405 GBP
View
A
Retailer 6
-
£1,406 GBP
View
A
Retailer 7
-
£1,428 GBP
View
B+
Retailer 8
-
£1,451 GBP
View
A
Retailer 9
-
£1,521 GBP
View
Retailer 10
-
£1,540 GBP
View
Price last confirmed 26 days ago
Retailer 11
-
£1,540 GBP
View
Price last confirmed 26 days ago
B+
Retailer 12
-
£1,563 GBP
View
B+
Retailer 13
-
£1,577 GBP
View
B+
Retailer 14
-
£1,586 GBP
View
B+
Retailer 15
-
£1,611 GBP
View
Retailer 16
-
£1,621 GBP
View
Price last confirmed 37 days ago
Retailer 17
-
£1,777 GBP
View
Price last confirmed 26 days ago
B+
Retailer 18
-
£1,783 GBP
View
Retailer 19
-
£1,910 GBP
View
Price last confirmed 33 days ago
B+
Retailer 20
-
£1,984 GBP
View
B
Retailer 21
-
£2,545 GBP
View
Retailer 22
-
£3,211 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
7e379f26-444b-4a28-a6e6-56d14ca77333 · Oct 11
£3,219 GBP
$4,308 USD
View
Price last confirmed 26 days ago
22 more retailers have this diamond
Prices start from £1,090 GBPSave up to £1,455 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
£1,090 GBP