Round|Natural|GIA

0.80ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5506585990

Certificate GIA 5506585990

Diamond specifications and retailer prices

From £867 GBP
$1,162 USD
As of October 31, 2026
Save £1,662 GBP (66%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,529 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.8ct natural round diamond

This 0.8ct natural round sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5506585990. Listed at 20 retailers as of October 30, 2026, with prices from £867 to £2,529, a £1,662 spread on the same certified stone. NZ Jewellers lists it at £2,529. 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

0.80
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5506585990
Dimensions5.93 × 5.88 × 3.67 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.93 mm5.88 mm0.80 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5506585990
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,534 GBP|Low: £722 GBP|High: £1,922 GBP|Avg: £1,262 GBP|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 8£867 GBP
Retailer 11£902 GBP
Retailer 10£975 GBP
Retailer 7£1,026 GBP
Retailer 4£1,149 GBP
Retailer 3£1,175 GBP
Retailer 5£1,349 GBP
Retailer 9£1,353 GBP
Retailer 1£1,534 GBP
Retailer 2£1,693 GBP
Retailer 6£1,909 GBP

44 data points across 11 retailers

20 retailers£867 GBP to £2,529 GBP

B+
Cheapest Retailer
-
£867 GBP
$1,162 USD
Final sale: no returns
B+
Retailer 2
-
£889 GBP
$1,191 USD
View
B+
Retailer 3
-
£899 GBP
$1,205 USD
View
B+
Retailer 4
-
£902 GBP
$1,208 USD
View
B+
Retailer 5
-
£922 GBP
$1,235 USD
View
B+
Retailer 6
-
£940 GBP
$1,259 USD
View
B+
Retailer 7
-
£975 GBP
$1,307 USD
View
B
Retailer 8
-
£1,026 GBP
$1,375 USD
View
B
Retailer 9
-
£1,084 GBP
$1,452 USD
View
B+
Retailer 10
-
£1,119 GBP
$1,500 USD
View
B+
Retailer 11
-
£1,119 GBP
$1,500 USD
View
B+
Retailer 12
-
£1,149 GBP
View
B
Retailer 13
-
£1,157 GBP
$1,550 USD
View
B
Retailer 14
-
£1,175 GBP
$1,575 USD
View
B
Retailer 15
-
£1,349 GBP
€1,722 EUR
View
Retailer 16
-
£1,353 GBP
A$2,789 AUD
View
Price last confirmed 25 days ago
B
Retailer 17
-
£1,534 GBP
ZAR 33,196 ZAR
View
B
Retailer 18
-
£1,693 GBP
CA$3,150 CAD
View
B
Retailer 19
-
£1,909 GBP
View
Most Expensive
B
NZ Jewellers
abd4e079-4c0d-4db3-8fbc-485f90a6eab7 · Oct 30
£2,529 GBP
$3,389 USD
View
19 more retailers have this diamond
Prices start from £867 GBPSave up to £1,662 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+
0.80ct Round
£867 GBP