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Round|Natural|GIA

0.65ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2566192907

Certificate GIA 2566192907

Diamond specifications and retailer prices

From £575 GBP
$771 USD
As of October 31, 2026
Save £360 GBP (39%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £936 GBP at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 0.65ct natural round diamond

This 0.65ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566192907. Listed at 15 retailers as of October 31, 2026, with prices from £575 to £936, a £360 spread on the same certified stone. Frank Darling lists it at £936. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2566192907
Dimensions5.52 × 5.53 × 3.46 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.52 mm5.53 mm0.65 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566192907
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°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: Oct 31
Current: £936 GBP|Low: £575 GBP|High: £950 GBP|Avg: £734 GBP|-1.3%
Frank Darling
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
November 1, 2026
Retailer 15£575 GBP
Retailer 3£590 GBP
Retailer 11£603 GBP
Retailer 10£623 GBP
Retailer 7£626 GBP
Retailer 5£640 GBP
Retailer 14£646 GBP
Retailer 9£697 GBP
Retailer 2£722 GBP
Retailer 6£722 GBP
Retailer 12£820 GBP
Retailer 8£838 GBP
Retailer 4£877 GBP
Retailer 13£932 GBP
Frank Darling£936 GBP

32 data points across 15 retailers

15 retailers£575 GBP to £936 GBP

A
Cheapest Retailer
-
£575 GBP
$771 USD
A
Retailer 2
-
£590 GBP
$790 USD
View
A
Retailer 3
-
£603 GBP
SGD 1,091 SGD
View
A
Retailer 4
-
£623 GBP
$835 USD
View
A
Retailer 5
-
£626 GBP
SGD 1,134 SGD
View
A
Retailer 6
-
£640 GBP
$857 USD
View
A
Retailer 7
-
£646 GBP
$866 USD
View
B+
Retailer 8
-
£697 GBP
View
B+
Retailer 9
-
£722 GBP
$968 USD
View
B+
Retailer 10
-
£722 GBP
$968 USD
View
B+
Retailer 11
-
£820 GBP
View
B+
Retailer 12
-
£838 GBP
€1,069 EUR
View
B+
Retailer 13
-
£877 GBP
$1,175 USD
View
B+
Retailer 14
-
£932 GBP
$1,248 USD
View
Most Expensive
B+
Frank Darling
2687175HK · Oct 31
£936 GBP
$1,254 USD
View
14 more retailers have this diamond
Prices start from £575 GBPSave up to £360 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
£575 GBP