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Round|Natural|GIA

1.00ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 5202477736

Certificate GIA 5202477736

Diamond specifications and retailer prices

From £1,560 GBP
As of November 4, 2026
Save £2,742 GBP (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,301 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 top-tier cut grade and certified by GIA 5202477736. Listed at 21 retailers as of November 4, 2026, with prices from £1,560 to £4,301, a £2,742 spread on the same certified stone. NZ Jewellers lists it at £4,301. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5202477736
Dimensions6.37 × 6.34 × 4.00 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.37 mm6.34 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5202477736
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.1%

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 4
Current: £4,301 GBP|Low: £1,550 GBP|High: £4,301 GBP|Avg: £2,246 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 17£1,560 GBP
Retailer 3£1,626 GBP
Retailer 6£1,635 GBP
Retailer 9£1,697 GBP
Retailer 15£1,701 GBP
Retailer 18£1,829 GBP
Retailer 10£1,864 GBP
Retailer 8£1,950 GBP
Retailer 2£1,968 GBP
Retailer 4£2,037 GBP
Retailer 7£2,140 GBP
Retailer 11£2,140 GBP
Retailer 19£2,150 GBP
Retailer 12£2,152 GBP
Retailer 5£2,207 GBP
Retailer 13£2,390 GBP
Retailer 16£2,963 GBP
Retailer 14£3,595 GBP
NZ Jewellers£4,301 GBP

30 data points across 19 retailers

21 retailers£1,560 GBP to £4,301 GBP

A
Cheapest Retailer
-
£1,560 GBP
A
Retailer 2
-
£1,626 GBP
View
A
Retailer 3
-
£1,635 GBP
View
A
Retailer 4
-
£1,646 GBP
View
A
Retailer 5
-
£1,697 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,701 GBP
View
A
Retailer 7
-
£1,829 GBP
View
A
Retailer 8
-
£1,864 GBP
View
A
Retailer 9
-
£1,950 GBP
View
A
Retailer 10
-
£1,968 GBP
View
A
Retailer 11
-
£2,037 GBP
View
A
Retailer 12
-
£2,140 GBP
View
A
Retailer 13
-
£2,140 GBP
View
A
Retailer 14
-
£2,150 GBP
View
A
Retailer 15
-
£2,152 GBP
View
A
Retailer 16
-
£2,207 GBP
View
B+
Retailer 17
-
£2,390 GBP
View
Retailer 18
-
£2,486 GBP
View
Price last confirmed 38 days ago
B
Retailer 19
-
£2,963 GBP
View
B
Retailer 20
-
£3,595 GBP
View
Most Expensive
B
NZ Jewellers
329a9ec0-7336-4565-aaca-b918f00a0438 · Nov 5
£4,301 GBP
$5,789 USD
View
20 more retailers have this diamond
Prices start from £1,560 GBPSave up to £2,742 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
£1,560 GBP