CaratHunter
Plans
Radiant|Natural|GIA

1.00ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 6505943659

Certificate GIA 6505943659

Diamond specifications and retailer prices

From £2,322 GBP
$3,111 USD
As of October 30, 2026
Save £2,417 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,738 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 6505943659. Listed at 15 retailers as of October 30, 2026, with prices from £2,322 to £4,738, a £2,417 spread on the same certified stone. NZ Jewellers lists it at £4,738. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle44.82°
Pavilion angle31.51°
OriginNatural
Grading LabGIA
CertificateGIA 6505943659
Dimensions6.61 × 5.10 × 3.30 mm
L/W Ratio1.30
Top View
6.61 mm5.10 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6505943659
Side View
Table 70.0%Crown 44.82°GirdlePavilion 31.51°Culet: NDepth 64.8%

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: Oct 30
Current: £2,589 GBP|Low: £2,322 GBP|High: £4,493 GBP|Avg: £3,059 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8£2,322 GBP
Retailer 6£2,414 GBP
Retailer 1£2,589 GBP
Retailer 9£2,824 GBP
Retailer 2£2,842 GBP
Retailer 7£2,913 GBP
Retailer 4£3,184 GBP
Retailer 3£3,343 GBP
Retailer 5£4,463 GBP

41 data points across 9 retailers

15 retailers£2,322 GBP to £4,738 GBP

B+
Cheapest Retailer
-
£2,322 GBP
$3,111 USD
B+
Retailer 2
-
£2,414 GBP
$3,235 USD
View
B+
Retailer 3
-
£2,589 GBP
View
B
Retailer 4
-
£2,612 GBP
$3,500 USD
View
B+
Retailer 5
-
£2,720 GBP
$3,644 USD
View
B+
Retailer 6
-
£2,720 GBP
$3,644 USD
View
B
Retailer 7
-
£2,824 GBP
$3,784 USD
View
B
Retailer 8
-
£2,828 GBP
$3,789 USD
View
B+
Retailer 9
-
£2,842 GBP
View
Retailer 10
-
£2,913 GBP
A$6,005 AUD
View
Price last confirmed 23 days ago
B
Retailer 11
-
£3,138 GBP
$4,205 USD
View
B
Retailer 12
-
£3,184 GBP
€4,063 EUR
View
B
Retailer 13
-
£3,343 GBP
ZAR 72,360 ZAR
View
B
Retailer 14
-
£4,463 GBP
View
Most Expensive
B
NZ Jewellers
8d68ffc7-03de-4063-a5a4-5e05efd635a3 · Oct 30
£4,738 GBP
$6,349 USD
View
14 more retailers have this diamond
Prices start from £2,322 GBPSave up to £2,417 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
£2,322 GBP