Round|Natural|GIA

0.81ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6521265345

Certificate GIA 6521265345

Diamond specifications and retailer prices

From £772 GBP
$1,034 USD
As of October 30, 2026
Save £929 GBP (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,366 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 0.81ct natural round diamond

This 0.81ct natural round sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521265345. Listed at 18 retailers as of October 29, 2026, with a 120% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.81
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521265345
Dimensions5.99 × 5.94 × 3.70 mm
L/W Ratio1.01
Star length50%
Top View
5.99 mm5.94 mm0.81 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521265345
Side View
Table 57.0%Crown 35.5°GirdlePavilion 40.8°Culet: NoneDepth 62.0%

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: Oct 30
Current: £1,291 GBP|Low: £743 GBP|High: £1,798 GBP|Avg: £1,153 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8£772 GBP
Retailer 2£802 GBP
Retailer 9£821 GBP
Retailer 3£906 GBP
Retailer 7£914 GBP
Retailer 5£1,048 GBP
Retailer 10£1,137 GBP
Retailer 4£1,229 GBP
Retailer 1£1,291 GBP
Retailer 6£1,700 GBP

39 data points across 10 retailers

18 retailers£772 GBP to £1,700 GBP

A
Cheapest Retailer
-
£772 GBP
$1,034 USD
Final sale: no returns
A
Retailer 2
-
£802 GBP
$1,074 USD
View
A
Retailer 3
-
£821 GBP
$1,100 USD
View
Retailer 4
-
£879 GBP
$1,178 USD
View
Price last confirmed 44 days ago
Retailer 5
-
£879 GBP
$1,178 USD
View
Price last confirmed 22 days ago
Retailer 6
-
£879 GBP
$1,178 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
£906 GBP
$1,214 USD
View
Retailer 8
-
£913 GBP
$1,223 USD
View
Price last confirmed 32 days ago
A
Retailer 9
-
£914 GBP
$1,224 USD
View
Retailer 10
-
£1,014 GBP
$1,359 USD
View
Price last confirmed 22 days ago
Retailer 11
-
£1,014 GBP
$1,359 USD
View
Price last confirmed 39 days ago
B+
Retailer 12
-
£1,048 GBP
View
B+
Retailer 13
-
£1,137 GBP
View
B+
Retailer 14
-
£1,229 GBP
View
B+
Retailer 15
-
£1,291 GBP
€1,647 EUR
View
B
Retailer 16
-
£1,700 GBP
View
Retailer 17
-
£2,366 GBP
$3,170 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
0267b566-3f76-496c-9319-e5606abfe050 · Sep 26
£2,366 GBP
$3,170 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from £772 GBPSave up to £929 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
0.81ct Round
£772 GBP