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Round|Natural|GIA

0.81ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6552400407

Certificate GIA 6552400407

Diamond specifications and retailer prices

From £805 GBP
$1,079 USD
As of November 1, 2026
Save £1,245 GBP (61%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,050 GBP at NZ Jewellers · As of November 2, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552400407. Listed at 15 retailers as of November 1, 2026, with prices from £805 to £2,050, a £1,245 spread on the same certified stone. NZ Jewellers lists it at £2,050. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6552400407
Dimensions5.90 × 5.94 × 3.72 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Cloud
Top View
5.90 mm5.94 mm0.81 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552400407
Side View
Table 58.0%Crown 35°Girdle: MED-SLIPavilion 41.4°Culet: NoneDepth 62.9%

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 1
Current: £2,050 GBP|Low: £797 GBP|High: £2,050 GBP|Avg: £1,113 GBP|+1.0%
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
November 2, 2026
Retailer 13£805 GBP
Retailer 10£806 GBP
Retailer 3£840 GBP
Retailer 12£840 GBP
Retailer 6£953 GBP
Retailer 4£970 GBP
Retailer 11£995 GBP
Retailer 2£1,060 GBP
Retailer 5£1,088 GBP
Retailer 7£1,172 GBP
Retailer 9£1,243 GBP
Retailer 8£1,539 GBP
NZ Jewellers£2,050 GBP

34 data points across 13 retailers

15 retailers£805 GBP to £2,050 GBP

A
Cheapest Retailer
-
£805 GBP
$1,079 USD
A
Retailer 2
-
£806 GBP
$1,080 USD
View
Retailer 3
-
£806 GBP
$1,080 USD
View
Price last confirmed 39 days ago
A
Retailer 4
-
£840 GBP
$1,126 USD
View
A
Retailer 5
-
£840 GBP
$1,126 USD
View
A
Retailer 6
-
£873 GBP
$1,170 USD
View
A
Retailer 7
-
£953 GBP
View
A
Retailer 8
-
£970 GBP
$1,300 USD
View
A
Retailer 9
-
£995 GBP
View
A
Retailer 10
-
£1,060 GBP
View
Retailer 11
-
£1,088 GBP
A$2,243 AUD
View
Price last confirmed 28 days ago
B+
Retailer 12
-
£1,172 GBP
€1,496 EUR
View
B+
Retailer 13
-
£1,243 GBP
ZAR 26,913 ZAR
View
B+
Retailer 14
-
£1,539 GBP
View
Most Expensive
B
NZ Jewellers
a8059c2e-eda3-4644-a80a-cce512508ee5 · Nov 2
£2,050 GBP
$2,747 USD
View
14 more retailers have this diamond
Prices start from £805 GBPSave up to £1,245 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
£805 GBP