Round|Natural|GIA

0.80ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6203521683

Certificate GIA 6203521683

Diamond specifications and retailer prices

From £554 GBP
HK$5,800 HKD
As of October 31, 2026
Save £807 GBP (59%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,360 GBP at NZ Jewellers · As of October 20, 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 6203521683. Listed at 17 retailers as of October 29, 2026, with a 146% 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
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6203521683
Dimensions5.87 × 5.92 × 3.69 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
5.87 mm5.92 mm0.80 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6203521683
Side View
Table 57.0%Crown 36°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,360 GBP|Low: £545 GBP|High: £2,360 GBP|Avg: £942 GBP
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 9£554 GBP
Retailer 2£555 GBP
Retailer 5£606 GBP
Retailer 14£681 GBP
Retailer 6£752 GBP
Retailer 4£765 GBP
Retailer 3£801 GBP
Retailer 16£851 GBP
Retailer 10£861 GBP
Retailer 7£869 GBP
Retailer 15£922 GBP
Retailer 12£960 GBP
Retailer 8£984 GBP
Retailer 11£1,093 GBP
Retailer 13£1,361 GBP
NZ Jewellers£2,360 GBP

31 data points across 16 retailers

17 retailers£554 GBP to £1,361 GBP

A
Cheapest Retailer
-
£554 GBP
HK$5,800 HKD
A
Retailer 2
-
£555 GBP
₹70,762 INR
View
A
Retailer 3
-
£606 GBP
$812 USD
View
A
Retailer 4
-
£681 GBP
$913 USD
View
Final sale: no returns
Retailer 5
-
£752 GBP
$1,008 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
£765 GBP
SGD 1,385 SGD
View
Retailer 7
-
£781 GBP
$1,047 USD
View
Price last confirmed 16 days ago
B+
Retailer 8
-
£801 GBP
$1,073 USD
View
B+
Retailer 9
-
£851 GBP
$1,140 USD
View
B+
Retailer 10
-
£861 GBP
View
Retailer 11
-
£869 GBP
$1,164 USD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
£922 GBP
$1,235 USD
View
B+
Retailer 13
-
£960 GBP
€1,225 EUR
View
Retailer 14
-
£984 GBP
A$2,029 AUD
View
Price last confirmed 27 days ago
B+
Retailer 15
-
£1,093 GBP
ZAR 23,663 ZAR
View
B
Retailer 16
-
£1,361 GBP
View
Most Expensive
NZ Jewellers
ce6df165-cb18-4743-893b-a0eae58deb8d · Oct 20
£2,360 GBP
$3,162 USD
View
Price last confirmed 11 days ago
16 more retailers have this diamond
Prices start from £554 GBPSave up to £807 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
0.80ct Round
£554 GBP