Round|Natural|GIA

0.80ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1389368358

Certificate GIA 1389368358

Diamond specifications and retailer prices

From £719 GBP
As of November 6, 2026
Save £1,625 GBP (69%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,344 GBP at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1389368358. Listed at 18 retailers as of November 5, 2026, with prices from £719 to £2,344, a £1,625 spread on the same certified stone. NZ Jewellers lists it at £2,344. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1389368358
Dimensions5.89 × 5.93 × 3.70 mm
L/W Ratio1.01
Top View
5.89 mm5.93 mm0.80 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1389368358
Side View
Table 57.0%Crown 35.5°Girdle: NULPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
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: Nov 6
Current: £719 GBP|Low: £719 GBP|High: £1,779 GBP|Avg: £1,220 GBP|-4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1£719 GBP
Retailer 3£1,074 GBP
Retailer 5£1,148 GBP
Retailer 2£1,204 GBP
Retailer 4£1,259 GBP
Retailer 6£1,421 GBP
Retailer 7£1,755 GBP

27 data points across 7 retailers

18 retailers£719 GBP to £2,344 GBP

A
Cheapest Retailer
-
£719 GBP
A
Retailer 2
-
£858 GBP
View
A
Retailer 3
-
£887 GBP
View
Final sale: no returns
A
Retailer 4
-
£891 GBP
View
Retailer 5
-
£961 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£961 GBP
View
B+
Retailer 7
-
£998 GBP
View
B+
Retailer 8
-
£1,046 GBP
View
B+
Retailer 9
-
£1,062 GBP
View
B+
Retailer 10
-
£1,074 GBP
View
B+
Retailer 11
-
£1,109 GBP
View
B+
Retailer 12
-
£1,148 GBP
View
B+
Retailer 13
-
£1,204 GBP
View
Retailer 14
-
£1,256 GBP
View
Price last confirmed 33 days ago
B+
Retailer 15
-
£1,259 GBP
View
B+
Retailer 16
-
£1,421 GBP
View
B
Retailer 17
-
£1,755 GBP
View
Most Expensive
B
NZ Jewellers
c840f667-effc-43a0-97e9-61d28b403e2e · Nov 5
£2,344 GBP
$3,137 USD
View
17 more retailers have this diamond
Prices start from £719 GBPSave up to £1,625 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
£719 GBP