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Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

GD • D/SI2 • GIA 6542551989

Certificate GIA 6542551989

Diamond specifications and retailer prices

From £1,103 GBP
As of November 5, 2026
Save £2,446 GBP (69%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,549 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 6542551989. Listed at 19 retailers as of November 5, 2026, with prices from £1,103 to £3,549, a £2,446 spread on the same certified stone. NZ Jewellers lists it at £3,549. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle42.4°
OriginNatural
Grading LabGIA
CertificateGIA 6542551989
Dimensions6.30 × 6.24 × 4.07 mm
L/W Ratio1.01
Top View
6.30 mm6.24 mm1.00 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542551989
Side View
Table 59.0%Crown 34.5°Girdle: MED-THKPavilion 42.4°Culet: NDepth 64.9%

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: Nov 5
Current: £3,549 GBP|Low: £1,103 GBP|High: £3,599 GBP|Avg: £1,583 GBP|-1.4%
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
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 19£1,103 GBP
Retailer 4£1,201 GBP
Retailer 15£1,217 GBP
Retailer 9£1,242 GBP
Retailer 14£1,247 GBP
Retailer 11£1,268 GBP
Retailer 3£1,318 GBP
Retailer 10£1,337 GBP
Retailer 8£1,345 GBP
Retailer 16£1,360 GBP
Retailer 7£1,379 GBP
Retailer 6£1,464 GBP
Retailer 18£1,464 GBP
Retailer 2£1,508 GBP
Retailer 17£1,521 GBP
Retailer 12£1,561 GBP
Retailer 13£1,849 GBP
Retailer 5£2,578 GBP
NZ Jewellers£3,549 GBP

31 data points across 19 retailers

19 retailers£1,103 GBP to £3,549 GBP

A
Cheapest Retailer
-
£1,103 GBP
A
Retailer 2
-
£1,201 GBP
View
A
Retailer 3
-
£1,217 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,242 GBP
View
A
Retailer 5
-
£1,247 GBP
View
A
Retailer 6
-
£1,268 GBP
View
A
Retailer 7
-
£1,318 GBP
View
Retailer 8
-
£1,337 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£1,345 GBP
View
A
Retailer 10
-
£1,360 GBP
View
A
Retailer 11
-
£1,379 GBP
View
A
Retailer 12
-
£1,464 GBP
View
A
Retailer 13
-
£1,464 GBP
View
A
Retailer 14
-
£1,508 GBP
View
A
Retailer 15
-
£1,521 GBP
View
A
Retailer 16
-
£1,561 GBP
View
B+
Retailer 17
-
£1,849 GBP
View
B+
Retailer 18
-
£2,578 GBP
View
Most Expensive
B
NZ Jewellers
ec507c66-be37-4794-813a-ae2f4fb2529f · Nov 5
£3,549 GBP
$4,776 USD
View
18 more retailers have this diamond
Prices start from £1,103 GBPSave up to £2,446 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 Round
£1,103 GBP