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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6552212053

Certificate GIA 6552212053

Diamond specifications and retailer prices

From £1,816 GBP
As of November 5, 2026
Save £2,353 GBP (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,169 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552212053. Listed at 23 retailers as of November 5, 2026, with prices from £1,816 to £4,169, a £2,353 spread on the same certified stone. NZ Jewellers lists it at £4,169. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552212053
Dimensions6.38 × 6.40 × 3.95 mm
L/W Ratio1.00
Top View
6.38 mm6.40 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552212053
Side View
Table 60.0%Crown 33°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
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 5
Current: £4,169 GBP|Low: £1,816 GBP|High: £4,399 GBP|Avg: £2,502 GBP|-4.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 6, 2026
Retailer 22£1,816 GBP
Retailer 12£1,902 GBP
Retailer 10£1,906 GBP
Retailer 6£1,941 GBP
Retailer 11£1,965 GBP
Retailer 15£1,995 GBP
Retailer 19£2,001 GBP
Retailer 17£2,004 GBP
Retailer 5£2,168 GBP
Retailer 14£2,193 GBP
Retailer 9£2,251 GBP
Retailer 3£2,363 GBP
Retailer 8£2,363 GBP
Retailer 13£2,437 GBP
Retailer 2£2,443 GBP
Retailer 16£2,461 GBP
Retailer 20£2,502 GBP
Retailer 18£2,623 GBP
Retailer 4£2,838 GBP
Retailer 21£2,921 GBP
Retailer 7£4,037 GBP
NZ Jewellers£4,169 GBP

23 data points across 22 retailers

23 retailers£1,816 GBP to £4,169 GBP

A
Cheapest Retailer
-
£1,816 GBP
A
Retailer 2
-
£1,902 GBP
View
A
Retailer 3
-
£1,906 GBP
View
A
Retailer 4
-
£1,941 GBP
View
A
Retailer 5
-
£1,965 GBP
View
A
Retailer 6
-
£1,995 GBP
View
A
Retailer 7
-
£2,001 GBP
View
Final sale: no returns
A
Retailer 8
-
£2,004 GBP
View
A
Retailer 9
-
£2,168 GBP
View
Retailer 10
-
£2,193 GBP
View
Price last confirmed 8 days ago
A
Retailer 11
-
£2,251 GBP
View
A
Retailer 12
-
£2,363 GBP
View
A
Retailer 13
-
£2,363 GBP
View
B+
Retailer 14
-
£2,437 GBP
View
B+
Retailer 15
-
£2,443 GBP
View
B+
Retailer 16
-
£2,461 GBP
View
B+
Retailer 17
-
£2,502 GBP
View
B+
Retailer 18
-
£2,623 GBP
View
Retailer 19
-
£2,790 GBP
View
Price last confirmed 33 days ago
B+
Retailer 20
-
£2,838 GBP
View
B+
Retailer 21
-
£2,921 GBP
View
B
Retailer 22
-
£4,037 GBP
View
Most Expensive
B
NZ Jewellers
bde55d89-2d88-488f-861d-e68e802678a4 · Nov 5
£4,169 GBP
$5,611 USD
View
22 more retailers have this diamond
Prices start from £1,816 GBPSave up to £2,353 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
£1,816 GBP