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Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

GD • D/SI2 • GIA 5151807441

Certificate GIA 5151807441

Diamond specifications and retailer prices

From £2,697 GBP
As of November 5, 2026
Save £3,421 GBP (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £6,118 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 5151807441. Listed at 20 retailers as of November 5, 2026, with prices from £2,697 to £6,118, a £3,421 spread on the same certified stone. NZ Jewellers lists it at £6,118. 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
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5151807441
Dimensions6.52 × 6.44 × 3.89 mm
L/W Ratio1.01
Top View
6.52 mm6.44 mm1.00 ctD / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 5151807441
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 60.0%

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: Nov 5
Current: £6,118 GBP|Low: £2,447 GBP|High: £6,118 GBP|Avg: £3,857 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
November 6, 2026
Retailer 8£2,730 GBP
Retailer 10£2,936 GBP
Retailer 4£3,014 GBP
Retailer 11£3,181 GBP
Retailer 12£3,181 GBP
Retailer 14£3,181 GBP
Retailer 7£3,435 GBP
Retailer 13£3,670 GBP
Retailer 2£3,730 GBP
Retailer 3£3,878 GBP
Retailer 5£4,208 GBP
Retailer 6£5,139 GBP
Retailer 9£5,592 GBP
NZ Jewellers£6,118 GBP

40 data points across 14 retailers

20 retailers£2,697 GBP to £6,118 GBP

B
Cheapest Retailer
-
£2,697 GBP
B+
Retailer 2
-
£2,730 GBP
View
B
Retailer 3
-
£2,799 GBP
View
B
Retailer 4
-
£2,936 GBP
View
Final sale: no returns
B
Retailer 5
-
£3,002 GBP
View
B
Retailer 6
-
£3,014 GBP
View
B
Retailer 7
-
£3,181 GBP
View
Retailer 8
-
£3,181 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£3,181 GBP
View
B
Retailer 10
-
£3,435 GBP
View
B
Retailer 11
-
£3,464 GBP
View
B
Retailer 12
-
£3,581 GBP
View
B
Retailer 13
-
£3,581 GBP
View
B
Retailer 14
-
£3,670 GBP
View
B
Retailer 15
-
£3,700 GBP
View
B
Retailer 16
-
£3,730 GBP
View
Retailer 17
-
£3,878 GBP
View
Price last confirmed 14 days ago
C
Retailer 18
-
£5,338 GBP
View
C
Retailer 19
-
£5,592 GBP
View
Most Expensive
C
NZ Jewellers
d8f8aaed-5d6c-49ad-a4ac-db313940aff6 · Nov 5
£6,118 GBP
$8,234 USD
View
19 more retailers have this diamond
Prices start from £2,697 GBPSave up to £3,421 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 Round
£2,697 GBP