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Round|Natural|GIA

0.65ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 6552580188

Certificate GIA 6552580188

Diamond specifications and retailer prices

From £486 GBP
HK$5,100 HKD
As of November 1, 2026
Save £1,572 GBP (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,070 GBP at NZ Jewellers · As of September 11, 2026
View at NZ Jewellers

About this 0.65ct natural round diamond

This 0.65ct natural round sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552580188. Listed at 18 retailers as of November 1, 2026, with a 323% 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

0.65
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552580188
Dimensions5.53 × 5.50 × 3.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Key to symbols
Crystal
Top View
5.53 mm5.50 mm0.65 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6552580188
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.6%

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: Nov 1
Current: £2,058 GBP|Low: £486 GBP|High: £2,078 GBP|Avg: £797 GBP|-0.9%
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
November 2, 2026
Retailer 6£486 GBP
Retailer 2£490 GBP
Retailer 12£509 GBP
Retailer 3£603 GBP
Retailer 13£606 GBP
Retailer 11£610 GBP
Retailer 16£657 GBP
Retailer 15£682 GBP
Retailer 7£687 GBP
Retailer 4£762 GBP
Retailer 5£771 GBP
Retailer 9£848 GBP
Retailer 14£899 GBP
Retailer 8£1,006 GBP
Retailer 10£1,202 GBP
NZ Jewellers£2,058 GBP

31 data points across 16 retailers

18 retailers£486 GBP to £2,058 GBP

A
Cheapest Retailer
-
£486 GBP
HK$5,100 HKD
A
Retailer 2
-
£490 GBP
₹62,560 INR
View
A
Retailer 3
-
£509 GBP
$683 USD
View
Final sale: no returns
A
Retailer 4
-
£603 GBP
A$1,245 AUD
View
A
Retailer 5
-
£606 GBP
$813 USD
View
A
Retailer 6
-
£610 GBP
€779 EUR
View
A
Retailer 7
-
£657 GBP
$881 USD
View
Retailer 8
-
£660 GBP
$886 USD
View
Price last confirmed 53 days ago
A
Retailer 9
-
£682 GBP
$915 USD
View
A
Retailer 10
-
£687 GBP
SGD 1,245 SGD
View
B+
Retailer 11
-
£762 GBP
$1,023 USD
View
B+
Retailer 12
-
£771 GBP
$1,035 USD
View
B+
Retailer 13
-
£848 GBP
€1,084 EUR
View
B+
Retailer 14
-
£899 GBP
$1,206 USD
View
Retailer 15
-
£1,006 GBP
A$2,076 AUD
View
Price last confirmed 29 days ago
B
Retailer 16
-
£1,202 GBP
View
B
Retailer 17
-
£2,058 GBP
$2,762 USD
View
Most Expensive
NZ Jewellers
e8286dc9-425c-4c08-b5d3-007cf7aabede · Sep 11
£2,070 GBP
$2,778 USD
View
Price last confirmed 52 days ago
17 more retailers have this diamond
Prices start from £486 GBPSave up to £1,572 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
0.65ct Round
£486 GBP