CaratHunter
Plans
Radiant|Natural|GIA

1.00ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 2566009790

Certificate GIA 2566009790

Diamond specifications and retailer prices

From £1,968 GBP
$2,637 USD
As of October 30, 2026
Save £2,047 GBP (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,015 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 2566009790. Listed at 16 retailers as of October 30, 2026, with prices from £1,968 to £4,015, a £2,047 spread on the same certified stone. NZ Jewellers lists it at £4,015. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566009790
Dimensions6.62 × 5.00 × 3.43 mm
L/W Ratio1.32
Culet sizeNone
Key to symbols
Etch Channel, Feather, Crystal, Indented Natural, Natural
Top View
6.62 mm5.00 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566009790
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

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: £4,015 GBP|Low: £1,968 GBP|High: £4,150 GBP|Avg: £2,587 GBP|-3.3%
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
October 31, 2026
Retailer 6£1,968 GBP
Retailer 3£2,064 GBP
Retailer 7£2,127 GBP
Retailer 4£2,243 GBP
Retailer 12£2,255 GBP
Retailer 13£2,305 GBP
Retailer 15£2,305 GBP
Retailer 10£2,388 GBP
Retailer 14£2,393 GBP
Retailer 11£2,526 GBP
Retailer 8£2,554 GBP
Retailer 5£2,589 GBP
Retailer 9£2,659 GBP
Retailer 2£2,833 GBP
Retailer 16£3,875 GBP
NZ Jewellers£4,015 GBP

29 data points across 16 retailers

16 retailers£1,968 GBP to £4,015 GBP

A
Cheapest Retailer
-
£1,968 GBP
$2,637 USD
A
Retailer 2
-
£2,064 GBP
$2,766 USD
View
B+
Retailer 3
-
£2,127 GBP
$2,850 USD
View
Final sale: no returns
B+
Retailer 4
-
£2,243 GBP
$3,005 USD
View
B+
Retailer 5
-
£2,255 GBP
View
B+
Retailer 6
-
£2,305 GBP
$3,088 USD
View
B+
Retailer 7
-
£2,305 GBP
$3,088 USD
View
B+
Retailer 8
-
£2,388 GBP
View
B+
Retailer 9
-
£2,393 GBP
$3,207 USD
View
B+
Retailer 10
-
£2,526 GBP
€3,224 EUR
View
Retailer 11
-
£2,554 GBP
A$5,266 AUD
View
Price last confirmed 27 days ago
B+
Retailer 12
-
£2,589 GBP
$3,470 USD
View
B+
Retailer 13
-
£2,659 GBP
$3,563 USD
View
B+
Retailer 14
-
£2,833 GBP
ZAR 61,316 ZAR
View
B
Retailer 15
-
£3,875 GBP
View
Most Expensive
B
NZ Jewellers
6f4cbdf4-17be-487f-844a-3f5eb4e11e4a · Oct 30
£4,015 GBP
$5,380 USD
View
15 more retailers have this diamond
Prices start from £1,968 GBPSave up to £2,047 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
£1,968 GBP