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Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

VG • H/SI2 • GIA 5182091620

Certificate GIA 5182091620

Diamond specifications and retailer prices

From €669 EUR
$750 USD
As of November 1, 2026
Save €1,253 EUR (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €1,922 EUR at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 5182091620. Listed at 7 retailers as of November 1, 2026, with prices from €669 to €1,922, a €1,253 spread on the same certified stone. Diamond Quarter lists it at €1,922. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.66
Carat
H
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5182091620
Dimensions5.72 × 5.68 × 3.38 mm
L/W Ratio1.01
Top View
5.72 mm5.68 mm0.66 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5182091620
Side View
Table 58.0%Crown 33°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 59.4%

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: Nov 1
Current: €796 EUR|Low: €669 EUR|High: €1,235 EUR|Avg: €857 EUR|+5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 4€669 EUR
Retailer 5€747 EUR
Retailer 1€796 EUR
Retailer 2€863 EUR
Retailer 3€1,221 EUR

38 data points across 5 retailers

7 retailers€669 EUR to €1,922 EUR

A
Cheapest Retailer
-
€669 EUR
$750 USD
B+
Retailer 2
-
€747 EUR
$838 USD
View
B+
Retailer 3
-
€796 EUR
£703 GBP
View
B+
Retailer 4
-
€863 EUR
View
B
Retailer 5
-
€1,145 EUR
View
B
Retailer 6
-
€1,221 EUR
£1,078 GBP
View
Most Expensive
C
Diamond Quarter
0.66SI2H51200965N · Nov 2
€1,922 EUR
£1,697 GBP
View
6 more retailers have this diamond
Prices start from €669 EURSave up to €1,253 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
€669 EUR