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0.65ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1555836496

Certificate GIA 1555836496

Diamond specifications and retailer prices

From £444 GBP
₹56,705 INR
As of October 31, 2026
Save £1,427 GBP (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,871 GBP at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555836496. Listed at 19 retailers as of October 30, 2026, with prices from £444 to £1,871, a £1,427 spread on the same certified stone. NZ Jewellers lists it at £1,871. 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
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555836496
Dimensions5.50 × 5.54 × 3.44 mm
L/W Ratio1.01
Girdle conditionFaceted
Key to symbols
Cloud, Crystal, Feather
Top View
5.50 mm5.54 mm0.65 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1555836496
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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: £444 GBP|Low: £443 GBP|High: £1,106 GBP|Avg: £687 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 1£444 GBP
Retailer 2£449 GBP
Retailer 9£460 GBP
Retailer 4£562 GBP
Retailer 8£694 GBP
Retailer 3£705 GBP
Retailer 6£774 GBP
Retailer 5£775 GBP
Retailer 7£1,099 GBP

27 data points across 9 retailers

19 retailers£444 GBP to £1,871 GBP

A
Cheapest Retailer
-
£444 GBP
₹56,705 INR
A
Retailer 2
-
£449 GBP
HK$4,700 HKD
View
A
Retailer 3
-
£460 GBP
$617 USD
View
Final sale: no returns
A
Retailer 4
-
£549 GBP
$735 USD
View
A
Retailer 5
-
£555 GBP
A$1,144 AUD
View
A
Retailer 6
-
£562 GBP
€717 EUR
View
Retailer 7
-
£596 GBP
$799 USD
View
Price last confirmed 47 days ago
A
Retailer 8
-
£619 GBP
SGD 1,121 SGD
View
A
Retailer 9
-
£619 GBP
$830 USD
View
B+
Retailer 10
-
£694 GBP
$930 USD
View
B+
Retailer 11
-
£705 GBP
$945 USD
View
B+
Retailer 12
-
£705 GBP
$945 USD
View
B+
Retailer 13
-
£774 GBP
View
B+
Retailer 14
-
£775 GBP
€989 EUR
View
B+
Retailer 15
-
£795 GBP
A$1,638 AUD
View
B+
Retailer 16
-
£814 GBP
$1,091 USD
View
Retailer 17
-
£897 GBP
A$1,849 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
£1,099 GBP
View
Most Expensive
B
NZ Jewellers
29514028-55d3-4866-a0ed-5b5584f5bb84 · Oct 30
£1,871 GBP
$2,507 USD
View
18 more retailers have this diamond
Prices start from £444 GBPSave up to £1,427 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
£444 GBP