Round|Natural|GIA

0.82ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2517420100

Shape and cutting style on the report: Round brilliant

Certificate GIA 2517420100

Diamond specifications and retailer prices

From £654 GBP
As of November 5, 2026
Save £112 GBP (15%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,686 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 0.82ct natural round diamond

This 0.82ct natural round sits in the just-under-one-carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2517420100. Listed at 8 retailers as of November 4, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.82
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2517420100
Dimensions5.95 × 5.98 × 3.75 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.95 mm5.98 mm0.82 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2517420100
Side View
Table 56.0%Crown 36.5°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 63.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £1,686 GBP|Low: £537 GBP|High: £1,686 GBP|Avg: £797 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 5£537 GBP
Retailer 6£537 GBP
Retailer 7£620 GBP
Retailer 4£654 GBP
Retailer 2£731 GBP
Retailer 3£766 GBP
NZ Jewellers£1,686 GBP

24 data points across 7 retailers

8 retailers£654 GBP to £766 GBP

Retailer 1
-
£537 GBP
Price last confirmed 29 days ago
Retailer 2
-
£537 GBP
View
Price last confirmed 29 days ago
Retailer 3
-
£558 GBP
View
Price last confirmed 38 days ago
Retailer 4
-
£620 GBP
View
Price last confirmed 38 days ago
B+
Retailer 5
-
£654 GBP
View
B+
Retailer 6
-
£731 GBP
View
B+
Retailer 7
-
£766 GBP
View
Most Expensive
NZ Jewellers
f8e065a5-67f9-4de2-9c3d-babeae160245 · Sep 28
£1,686 GBP
$2,269 USD
View
Price last confirmed 39 days ago
7 more retailers have this diamond
Prices start from £654 GBPSave up to £112 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+
0.82ct Round
£654 GBP