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Round|Natural|GIA

0.80ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6545006193

Certificate GIA 6545006193

Diamond specifications and retailer prices

From £458 GBP
As of November 5, 2026
Save £1,435 GBP (76%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,894 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545006193. Listed at 20 retailers as of November 5, 2026, with prices from £458 to £1,894, a £1,435 spread on the same certified stone. NZ Jewellers lists it at £1,894. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6545006193
Dimensions5.92 × 5.87 × 3.72 mm
L/W Ratio1.01
Top View
5.92 mm5.87 mm0.80 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545006193
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.1%

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 5
Current: £1,894 GBP|Low: £458 GBP|High: £1,937 GBP|Avg: £763 GBP|-2.2%
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 17£458 GBP
Retailer 12£466 GBP
Retailer 7£604 GBP
Retailer 9£612 GBP
Retailer 11£619 GBP
Retailer 20£627 GBP
Retailer 8£629 GBP
Retailer 13£645 GBP
Retailer 19£672 GBP
Retailer 10£697 GBP
Retailer 3£702 GBP
Retailer 6£712 GBP
Retailer 14£715 GBP
Retailer 16£726 GBP
Retailer 4£728 GBP
Retailer 2£757 GBP
Retailer 15£805 GBP
Retailer 18£893 GBP
Retailer 5£1,106 GBP
NZ Jewellers£1,894 GBP

15 data points across 20 retailers

20 retailers£458 GBP to £1,894 GBP

A
Cheapest Retailer
-
£458 GBP
A
Retailer 2
-
£466 GBP
View
A
Retailer 3
-
£604 GBP
View
A
Retailer 4
-
£612 GBP
View
Retailer 5
-
£619 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£627 GBP
View
A
Retailer 7
-
£629 GBP
View
A
Retailer 8
-
£645 GBP
View
B+
Retailer 9
-
£672 GBP
View
A
Retailer 10
-
£697 GBP
View
A
Retailer 11
-
£702 GBP
View
A
Retailer 12
-
£712 GBP
View
A
Retailer 13
-
£715 GBP
View
A
Retailer 14
-
£726 GBP
View
A
Retailer 15
-
£728 GBP
View
A
Retailer 16
-
£757 GBP
View
A
Retailer 17
-
£805 GBP
View
B+
Retailer 18
-
£893 GBP
View
B+
Retailer 19
-
£1,106 GBP
View
Most Expensive
B
NZ Jewellers
ef739d07-087a-4231-97c0-db4d0ff768af · Nov 5
£1,894 GBP
$2,549 USD
View
19 more retailers have this diamond
Prices start from £458 GBPSave up to £1,435 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
£458 GBP