Round|Natural|GIA

0.80ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1545854319

Certificate GIA 1545854319

Diamond specifications and retailer prices

From £787 GBP
$1,055 USD
As of October 31, 2026
Save £947 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,298 GBP at NZ Jewellers · As of September 26, 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 1545854319. Listed at 19 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

0.80
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545854319
Dimensions5.94 × 5.89 × 3.70 mm
L/W Ratio1.01
Key to symbols
Cloud
Top View
5.94 mm5.89 mm0.80 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545854319
Side View
Table 56.0%CrownGirdlePavilionCulet: NDepth 62.5%

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: £1,070 GBP|Low: £722 GBP|High: £1,746 GBP|Avg: £1,074 GBP|+4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 10£787 GBP
Retailer 4£806 GBP
Retailer 2£818 GBP
Retailer 12£837 GBP
Retailer 9£899 GBP
Retailer 3£952 GBP
Retailer 1£1,070 GBP
Retailer 8£1,156 GBP
Retailer 11£1,232 GBP
Retailer 6£1,316 GBP
Retailer 5£1,393 GBP
Retailer 7£1,735 GBP

40 data points across 12 retailers

19 retailers£787 GBP to £1,735 GBP

B+
Cheapest Retailer
-
£787 GBP
$1,055 USD
Final sale: no returns
B+
Retailer 2
-
£806 GBP
$1,080 USD
View
B+
Retailer 3
-
£818 GBP
$1,096 USD
View
B+
Retailer 4
-
£837 GBP
$1,122 USD
View
Retailer 5
-
£854 GBP
$1,144 USD
View
Price last confirmed 23 days ago
Retailer 6
-
£854 GBP
$1,144 USD
View
Price last confirmed 23 days ago
Retailer 7
-
£887 GBP
$1,188 USD
View
Price last confirmed 32 days ago
B+
Retailer 8
-
£899 GBP
$1,205 USD
View
B+
Retailer 9
-
£922 GBP
$1,236 USD
View
B+
Retailer 10
-
£952 GBP
$1,275 USD
View
Retailer 11
-
£985 GBP
$1,320 USD
View
Price last confirmed 32 days ago
B
Retailer 12
-
£1,070 GBP
View
B+
Retailer 13
-
£1,156 GBP
View
B
Retailer 14
-
£1,198 GBP
$1,605 USD
View
Retailer 15
-
£1,232 GBP
A$2,539 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
£1,316 GBP
€1,679 EUR
View
B
Retailer 17
-
£1,393 GBP
ZAR 30,163 ZAR
View
B
Retailer 18
-
£1,735 GBP
View
Most Expensive
NZ Jewellers
b671951b-5a27-4c0d-a480-147e02f29600 · Sep 26
£2,298 GBP
$3,079 USD
View
Price last confirmed 34 days ago
18 more retailers have this diamond
Prices start from £787 GBPSave up to £947 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
£787 GBP