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0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2241022762

Certificate GIA 2241022762

Diamond specifications and retailer prices

From £467 GBP
SGD 847 SGD
As of October 31, 2026
Save £385 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £852 GBP at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.66ct natural round diamond

This 0.66ct 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 2241022762. Listed at 12 retailers as of October 31, 2026, with prices from £467 to £852, a £385 spread on the same certified stone. Frank Darling lists it at £852. 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

0.66
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2241022762
Dimensions5.54 × 3.46 × 3.46 mm
L/W Ratio1.60
Culet sizeNone
Top View
5.54 mm3.46 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2241022762
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

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: £852 GBP|Low: £467 GBP|High: £884 GBP|Avg: £679 GBP|-3.6%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 5£467 GBP
Retailer 11£540 GBP
Retailer 3£561 GBP
Retailer 8£569 GBP
Retailer 4£601 GBP
Retailer 9£702 GBP
Retailer 6£724 GBP
Retailer 2£725 GBP
Retailer 10£756 GBP
Retailer 7£807 GBP
Frank Darling£852 GBP

45 data points across 11 retailers

12 retailers£467 GBP to £852 GBP

A
Cheapest Retailer
-
£467 GBP
SGD 847 SGD
A
Retailer 2
-
£540 GBP
SGD 979 SGD
View
Retailer 3
-
£561 GBP
$753 USD
View
Price last confirmed 13 days ago
A
Retailer 4
-
£569 GBP
$763 USD
View
A
Retailer 5
-
£601 GBP
View
B+
Retailer 6
-
£662 GBP
$889 USD
View
B+
Retailer 7
-
£702 GBP
$942 USD
View
B+
Retailer 8
-
£724 GBP
View
B+
Retailer 9
-
£725 GBP
€927 EUR
View
B+
Retailer 10
-
£756 GBP
$1,014 USD
View
Retailer 11
-
£807 GBP
$1,083 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Frank Darling
2668909HK · Nov 2
£852 GBP
$1,143 USD
View
11 more retailers have this diamond
Prices start from £467 GBPSave up to £385 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
0.66ct Round
£467 GBP