Radiant|Natural|GIA

1.00ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 5231437621

Certificate GIA 5231437621

Diamond specifications and retailer prices

From £2,053 GBP
$2,751 USD
As of October 30, 2026
Save £2,067 GBP (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,286 GBP at NZ Jewellers · As of September 25, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5231437621. Listed at 19 retailers as of October 26, 2026, with a 101% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231437621
Dimensions7.66 × 4.76 × 3.28 mm
L/W Ratio1.61
Top View
7.66 mm4.76 mm1.00 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231437621
Side View
Table 56.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.0%

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: £3,024 GBP|Low: £1,845 GBP|High: £4,164 GBP|Avg: £2,604 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 3£1,851 GBP
Retailer 4£2,184 GBP
Retailer 11£2,194 GBP
Retailer 7£2,270 GBP
Retailer 8£2,407 GBP
Retailer 10£2,467 GBP
Retailer 9£2,565 GBP
Retailer 5£2,571 GBP
Retailer 6£2,881 GBP
Retailer 1£3,024 GBP
Retailer 2£4,120 GBP

24 data points across 11 retailers

19 retailers£2,053 GBP to £4,120 GBP

Retailer 1
-
£1,851 GBP
₹236,168 INR
Price last confirmed 8 days ago
Retailer 2
-
£2,017 GBP
$2,703 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£2,053 GBP
$2,751 USD
View
B+
Retailer 4
-
£2,184 GBP
$2,926 USD
View
B+
Retailer 5
-
£2,194 GBP
$2,940 USD
View
B+
Retailer 6
-
£2,238 GBP
$2,999 USD
View
B+
Retailer 7
-
£2,270 GBP
$3,042 USD
View
Final sale: no returns
B+
Retailer 8
-
£2,407 GBP
View
Retailer 9
-
£2,460 GBP
$3,296 USD
View
Price last confirmed 36 days ago
B
Retailer 10
-
£2,467 GBP
$3,305 USD
View
B
Retailer 11
-
£2,565 GBP
$3,437 USD
View
B
Retailer 12
-
£2,571 GBP
View
Retailer 13
-
£2,628 GBP
A$5,418 AUD
View
Price last confirmed 24 days ago
Retailer 14
-
£2,838 GBP
$3,803 USD
View
Price last confirmed 37 days ago
B
Retailer 15
-
£2,881 GBP
€3,676 EUR
View
B
Retailer 16
-
£3,024 GBP
ZAR 65,458 ZAR
View
Retailer 17
-
£3,197 GBP
$4,284 USD
View
Price last confirmed 18 days ago
B
Retailer 18
-
£4,120 GBP
View
Most Expensive
NZ Jewellers
b1466a4b-cd59-4f26-b574-ced26ac3ecdb · Sep 25
£4,286 GBP
$5,743 USD
View
Price last confirmed 36 days ago
18 more retailers have this diamond
Prices start from £2,053 GBPSave up to £2,067 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
£2,053 GBP