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Round|Natural|GIA

0.65ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6542801193

Certificate GIA 6542801193

Diamond specifications and retailer prices

From £609 GBP
$816 USD
As of October 31, 2026
Save £375 GBP (38%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £984 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6542801193. Listed at 15 retailers as of October 26, 2026, with prices from £609 to £984, a £375 spread on the same certified stone. Wholesale Diamonds Direct lists it at £984. 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°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6542801193
Dimensions5.51 × 5.54 × 3.40 mm
L/W Ratio1.01
Top View
5.51 mm5.54 mm0.65 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542801193
Side View
Table 59.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.5%

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: £763 GBP|Low: £609 GBP|High: £1,003 GBP|Avg: £770 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
Retailer 12
Retailer 13
Wholesale Diamonds Direct
November 1, 2026
Retailer 11£609 GBP
Retailer 2£627 GBP
Retailer 12£633 GBP
Retailer 4£663 GBP
Retailer 3£675 GBP
Retailer 10£681 GBP
Retailer 7£705 GBP
Retailer 9£737 GBP
Retailer 1£763 GBP
Retailer 8£858 GBP
Retailer 6£884 GBP
Retailer 13£928 GBP
Retailer 5£971 GBP
Wholesale Diamonds Direct£984 GBP

36 data points across 14 retailers

15 retailers£609 GBP to £984 GBP

A
Cheapest Retailer
-
£609 GBP
$816 USD
A
Retailer 2
-
£627 GBP
$840 USD
View
A
Retailer 3
-
£633 GBP
SGD 1,146 SGD
View
B+
Retailer 4
-
£663 GBP
SGD 1,201 SGD
View
B+
Retailer 5
-
£675 GBP
$905 USD
View
B+
Retailer 6
-
£681 GBP
$912 USD
View
B+
Retailer 7
-
£705 GBP
View
B+
Retailer 8
-
£737 GBP
$987 USD
View
B+
Retailer 9
-
£763 GBP
$1,023 USD
View
B+
Retailer 10
-
£790 GBP
$1,058 USD
View
B+
Retailer 11
-
£858 GBP
View
B+
Retailer 12
-
£884 GBP
€1,128 EUR
View
B
Retailer 13
-
£928 GBP
$1,243 USD
View
B
Retailer 14
-
£971 GBP
$1,300 USD
View
Most Expensive
B
Wholesale Diamonds Direct
262895371 · Oct 26
£984 GBP
$1,319 USD
View
14 more retailers have this diamond
Prices start from £609 GBPSave up to £375 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
£609 GBP