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Round|Natural|GIA

0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2231688609

Certificate GIA 2231688609

Diamond specifications and retailer prices

From €932 EUR
$1,045 USD
As of November 1, 2026
Save €1,032 EUR (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,963 EUR at MOH London · As of November 1, 2026
View at MOH London

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 2231688609. Listed at 10 retailers as of November 1, 2026, with prices from €932 to €1,963, a €1,032 spread on the same certified stone. MOH London lists it at €1,963. 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
OriginNatural
Grading LabGIA
CertificateGIA 2231688609
Dimensions5.58 × 5.61 × 3.44 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.58 mm5.61 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2231688609
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €1,963 EUR|Low: €1,158 EUR|High: €1,987 EUR|Avg: €1,483 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 3, 2026
Retailer 6€1,211 EUR
Retailer 2€1,216 EUR
Retailer 3€1,385 EUR
Retailer 4€1,401 EUR
Retailer 5€1,744 EUR
MOH London€1,963 EUR

43 data points across 6 retailers

10 retailers€932 EUR to €1,963 EUR

B+
Cheapest Retailer
-
€932 EUR
$1,045 USD
B
Retailer 2
-
€1,168 EUR
$1,310 USD
View
B
Retailer 3
-
€1,168 EUR
$1,310 USD
View
B
Retailer 4
-
€1,211 EUR
$1,358 USD
View
B
Retailer 5
-
€1,213 EUR
$1,360 USD
View
B
Retailer 6
-
€1,216 EUR
£1,074 GBP
View
B
Retailer 7
-
€1,385 EUR
View
Retailer 8
-
€1,401 EUR
A$2,418 AUD
View
Price last confirmed 29 days ago
B
Retailer 9
-
€1,744 EUR
CA$2,716 CAD
View
Most Expensive
B
MOH London
F73821336 · Nov 1
€1,963 EUR
£1,734 GBP
View
9 more retailers have this diamond
Prices start from €932 EURSave up to €1,032 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.

B+
0.66ct Round
€932 EUR