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0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7561043179

Certificate GIA 7561043179

Diamond specifications and retailer prices

From €509 EUR
SGD 772 SGD
As of October 31, 2026
Save €445 EUR (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €955 EUR 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 7561043179. Listed at 10 retailers as of October 31, 2026, with prices from €509 to €955, a €445 spread on the same certified stone. Frank Darling lists it at €955. 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
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 7561043179
Dimensions5.58 × 5.59 × 3.49 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.58 mm5.59 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7561043179
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.8°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: €955 EUR|Low: €370 EUR|High: €977 EUR|Avg: €715 EUR|-2.3%
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 3€370 EUR
Retailer 5€509 EUR
Retailer 11€578 EUR
Retailer 4€588 EUR
Retailer 10€689 EUR
Retailer 8€752 EUR
Retailer 6€798 EUR
Retailer 2€807 EUR
Retailer 9€809 EUR
Retailer 7€869 EUR
Frank Darling€955 EUR

32 data points across 11 retailers

10 retailers€509 EUR to €955 EUR

A
Cheapest Retailer
-
€509 EUR
SGD 772 SGD
A
Retailer 2
-
€578 EUR
SGD 876 SGD
View
A
Retailer 3
-
€588 EUR
$660 USD
View
A
Retailer 4
-
€689 EUR
$773 USD
View
A
Retailer 5
-
€752 EUR
$843 USD
View
B+
Retailer 6
-
€798 EUR
£705 GBP
View
B+
Retailer 7
-
€807 EUR
View
B+
Retailer 8
-
€809 EUR
$907 USD
View
Retailer 9
-
€869 EUR
$974 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Frank Darling
2678782HK · Nov 2
€955 EUR
$1,071 USD
View
9 more retailers have this diamond
Prices start from €509 EURSave up to €445 EUR

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
€509 EUR