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Radiant|Natural|GIA

1.00ct D SI1 Radiant Natural Diamond

ID • D/SI1 • GIA 6555914191

Certificate GIA 6555914191

Diamond specifications and retailer prices

From £1,347 GBP
HK$14,100 HKD
As of October 30, 2026
Save £2,433 GBP (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,780 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 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 6555914191. Listed at 23 retailers as of October 30, 2026, with prices from £1,347 to £3,780, a £2,433 spread on the same certified stone. NZ Jewellers lists it at £3,780. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555914191
Dimensions6.88 × 5.09 × 3.45 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
6.88 mm5.09 mm1.00 ctD / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555914191
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.6%

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: Oct 30
Current: £3,780 GBP|Low: £1,347 GBP|High: £3,780 GBP|Avg: £2,088 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 4£1,347 GBP
Retailer 15£1,445 GBP
Retailer 12£1,598 GBP
Retailer 10£1,669 GBP
Retailer 6£1,692 GBP
Retailer 16£1,769 GBP
Retailer 2£1,799 GBP
Retailer 3£1,808 GBP
Retailer 11£1,808 GBP
Retailer 8£1,889 GBP
Retailer 5£1,891 GBP
Retailer 19£1,913 GBP
Retailer 13£1,932 GBP
Retailer 9£1,963 GBP
Retailer 7£2,086 GBP
Retailer 18£2,202 GBP
Retailer 14£2,258 GBP
Retailer 20£3,171 GBP
Retailer 17£3,493 GBP
NZ Jewellers£3,780 GBP

22 data points across 20 retailers

23 retailers£1,347 GBP to £3,780 GBP

A
Cheapest Retailer
-
£1,347 GBP
HK$14,100 HKD
A
Retailer 2
-
£1,445 GBP
₹184,430 INR
View
A
Retailer 3
-
£1,598 GBP
SGD 2,893 SGD
View
A
Retailer 4
-
£1,669 GBP
$2,236 USD
View
Final sale: no returns
A
Retailer 5
-
£1,692 GBP
$2,267 USD
View
A
Retailer 6
-
£1,720 GBP
$2,305 USD
View
A
Retailer 7
-
£1,769 GBP
View
A
Retailer 8
-
£1,799 GBP
$2,410 USD
View
A
Retailer 9
-
£1,808 GBP
$2,423 USD
View
A
Retailer 10
-
£1,808 GBP
$2,423 USD
View
A
Retailer 11
-
£1,842 GBP
A$3,798 AUD
View
A
Retailer 12
-
£1,889 GBP
SGD 3,421 SGD
View
A
Retailer 13
-
£1,891 GBP
$2,534 USD
View
A
Retailer 14
-
£1,913 GBP
$2,563 USD
View
A
Retailer 15
-
£1,932 GBP
View
B+
Retailer 16
-
£1,963 GBP
$2,630 USD
View
B+
Retailer 17
-
£2,086 GBP
$2,795 USD
View
B+
Retailer 18
-
£2,202 GBP
ZAR 47,656 ZAR
View
Retailer 19
-
£2,257 GBP
A$4,653 AUD
View
Price last confirmed 24 days ago
B+
Retailer 20
-
£2,258 GBP
€2,881 EUR
View
B
Retailer 21
-
£3,171 GBP
View
B
Retailer 22
-
£3,493 GBP
View
Most Expensive
B
NZ Jewellers
e8b247d8-7354-4635-822f-51e06b3aee4c · Oct 30
£3,780 GBP
$5,065 USD
View
22 more retailers have this diamond
Prices start from £1,347 GBPSave up to £2,433 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
£1,347 GBP