Radiant|Natural|GIA

0.51ct D VS1 Radiant Natural Diamond

GD • D/VS1 • GIA 6521492018

Certificate GIA 6521492018

Diamond specifications and retailer prices

From £421 GBP
As of November 4, 2026
Save £632 GBP (60%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £1,583 GBP at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6521492018. Listed at 25 retailers as of November 4, 2026, with a 150% 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

0.51
Carat
D
Colour
VS1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6521492018
Dimensions5.66 × 4.04 × 2.51 mm
L/W Ratio1.40
Top View
5.66 mm4.04 mm0.51 ctD / VS1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6521492018
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,447 GBP|Low: £419 GBP|High: £1,539 GBP|Avg: £682 GBP|-6.0%
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
November 5, 2026
Retailer 11£421 GBP
Retailer 12£456 GBP
Retailer 5£481 GBP
Retailer 7£492 GBP
Retailer 4£497 GBP
Retailer 2£556 GBP
Retailer 3£556 GBP
Retailer 8£572 GBP
Retailer 13£596 GBP
Retailer 10£671 GBP
Retailer 6£704 GBP
Retailer 9£1,053 GBP
NZ Jewellers£1,447 GBP

30 data points across 13 retailers

25 retailers£421 GBP to £1,053 GBP

A
Cheapest Retailer
-
£421 GBP
Final sale: no returns
A
Retailer 2
-
£456 GBP
View
Retailer 3
-
£461 GBP
View
Price last confirmed 41 days ago
Retailer 4
-
£481 GBP
View
Price last confirmed 18 days ago
A
Retailer 5
-
£492 GBP
View
A
Retailer 6
-
£497 GBP
View
Retailer 7
-
£497 GBP
View
Price last confirmed 11 days ago
Retailer 8
-
£505 GBP
View
Price last confirmed 35 days ago
Retailer 9
-
£507 GBP
View
Price last confirmed 52 days ago
Retailer 10
-
£524 GBP
View
Price last confirmed 35 days ago
Retailer 11
-
£532 GBP
View
Price last confirmed 42 days ago
A
Retailer 12
-
£556 GBP
View
A
Retailer 13
-
£556 GBP
View
A
Retailer 14
-
£572 GBP
View
Retailer 15
-
£573 GBP
View
Price last confirmed 60 days ago
Retailer 16
-
£582 GBP
View
Price last confirmed 37 days ago
B+
Retailer 17
-
£596 GBP
View
B+
Retailer 18
-
£671 GBP
View
Retailer 19
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£700 GBP
View
Price last confirmed 24 days ago
B+
Retailer 20
-
£704 GBP
View
Retailer 21
-
£759 GBP
View
Price last confirmed 32 days ago
B
Retailer 22
-
£1,053 GBP
View
Retailer 23
-
£1,445 GBP
View
Price last confirmed 41 days ago
Retailer 24
-
£1,447 GBP
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
d246f97e-490e-4c92-ac9c-00ab8f413077 · Sep 29
£1,583 GBP
$2,137 USD
View
Price last confirmed 36 days ago
24 more retailers have this diamond
Prices start from £421 GBPSave up to £632 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
0.51ct Radiant
£421 GBP