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0.65ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 3555556659

Certificate GIA 3555556659

Diamond specifications and retailer prices

From £581 GBP
$778 USD
As of October 31, 2026
Save £364 GBP (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £945 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 0.65ct natural round diamond

This 0.65ct natural round sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3555556659. Listed at 13 retailers as of October 26, 2026, with prices from £581 to £945, a £364 spread on the same certified stone. Wholesale Diamonds Direct lists it at £945. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3555556659
Dimensions5.55 × 5.58 × 3.40 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.55 mm5.58 mm0.65 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555556659
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.1%

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: £845 GBP|Low: £581 GBP|High: £982 GBP|Avg: £766 GBP|-4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 1, 2026
Retailer 9£581 GBP
Retailer 2£632 GBP
Retailer 11£646 GBP
Retailer 6£647 GBP
Retailer 8£652 GBP
Retailer 5£673 GBP
Retailer 4£728 GBP
Retailer 7£825 GBP
Retailer 1£845 GBP
Retailer 10£885 GBP
Retailer 3£941 GBP
Wholesale Diamonds Direct£945 GBP

35 data points across 12 retailers

13 retailers£581 GBP to £945 GBP

A
Cheapest Retailer
-
£581 GBP
$778 USD
A
Retailer 2
-
£632 GBP
SGD 1,144 SGD
View
A
Retailer 3
-
£646 GBP
$865 USD
View
A
Retailer 4
-
£647 GBP
SGD 1,172 SGD
View
A
Retailer 5
-
£652 GBP
$874 USD
View
A
Retailer 6
-
£673 GBP
View
A
Retailer 7
-
£728 GBP
$976 USD
View
B+
Retailer 8
-
£784 GBP
$1,051 USD
View
B+
Retailer 9
-
£825 GBP
View
B+
Retailer 10
-
£845 GBP
€1,078 EUR
View
B+
Retailer 11
-
£885 GBP
$1,186 USD
View
B+
Retailer 12
-
£941 GBP
$1,261 USD
View
Most Expensive
B+
Wholesale Diamonds Direct
262895344 · Oct 26
£945 GBP
$1,266 USD
View
12 more retailers have this diamond
Prices start from £581 GBPSave up to £364 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
£581 GBP