Round|Natural|GIA

0.80ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2506352705

Certificate GIA 2506352705

Diamond specifications and retailer prices

From £698 GBP
$935 USD
As of October 31, 2026
Save £1,369 GBP (66%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,100 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 2506352705. Listed at 21 retailers as of October 27, 2026, with a 196% 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 angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2506352705
Dimensions5.92 × 5.88 × 3.68 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.92 mm5.88 mm0.80 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2506352705
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

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 31
Current: £2,067 GBP|Low: £698 GBP|High: £2,100 GBP|Avg: £1,034 GBP|-1.6%
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 16£698 GBP
Retailer 7£767 GBP
Retailer 6£782 GBP
Retailer 3£811 GBP
Retailer 10£847 GBP
Retailer 13£847 GBP
Retailer 5£880 GBP
Retailer 15£944 GBP
Retailer 14£948 GBP
Retailer 2£953 GBP
Retailer 12£1,000 GBP
Retailer 4£1,067 GBP
Retailer 8£1,126 GBP
Retailer 9£1,253 GBP
Retailer 11£1,554 GBP
NZ Jewellers£2,067 GBP

44 data points across 16 retailers

21 retailers£698 GBP to £2,067 GBP

A
Cheapest Retailer
-
£698 GBP
$935 USD
A
Retailer 2
-
£767 GBP
SGD 1,389 SGD
View
A
Retailer 3
-
£782 GBP
$1,048 USD
View
Final sale: no returns
B+
Retailer 4
-
£811 GBP
$1,087 USD
View
B+
Retailer 5
-
£847 GBP
$1,135 USD
View
B+
Retailer 6
-
£847 GBP
$1,135 USD
View
Retailer 7
-
£861 GBP
$1,154 USD
View
Price last confirmed 54 days ago
Retailer 8
-
£861 GBP
$1,154 USD
View
Price last confirmed 32 days ago
B+
Retailer 9
-
£880 GBP
$1,179 USD
View
B+
Retailer 10
-
£944 GBP
$1,265 USD
View
B+
Retailer 11
-
£948 GBP
$1,270 USD
View
B+
Retailer 12
-
£953 GBP
View
Retailer 13
-
£993 GBP
$1,331 USD
View
Price last confirmed 54 days ago
Retailer 14
-
£993 GBP
$1,331 USD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
£1,000 GBP
View
B
Retailer 16
-
£1,067 GBP
$1,429 USD
View
Retailer 17
-
£1,126 GBP
A$2,320 AUD
View
Price last confirmed 26 days ago
B
Retailer 18
-
£1,253 GBP
ZAR 27,129 ZAR
View
B
Retailer 19
-
£1,554 GBP
View
B
Retailer 20
-
£2,067 GBP
$2,769 USD
View
Most Expensive
NZ Jewellers
682f0d6b-1b18-40a0-9382-996856cd1e15 · Sep 26
£2,100 GBP
$2,814 USD
View
Price last confirmed 34 days ago
20 more retailers have this diamond
Prices start from £698 GBPSave up to £1,369 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
£698 GBP