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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 $1,857 NZD
$1,045 USD
As of November 1, 2026
Save $2,057 NZD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,914 NZD 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 $1,857 to $3,914, a $2,057 spread on the same certified stone. MOH London lists it at $3,914. 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: $3,914 NZD|Low: $2,308 NZD|High: $3,961 NZD|Avg: $2,955 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 3, 2026
Retailer 6$2,414 NZD
Retailer 2$2,424 NZD
Retailer 3$2,760 NZD
Retailer 4$2,794 NZD
Retailer 5$3,476 NZD
MOH London$3,914 NZD

43 data points across 6 retailers

10 retailers$1,857 NZD to $3,914 NZD

B+
Cheapest Retailer
-
$1,857 NZD
$1,045 USD
B
Retailer 2
-
$2,328 NZD
$1,310 USD
View
B
Retailer 3
-
$2,328 NZD
$1,310 USD
View
B
Retailer 4
-
$2,414 NZD
$1,358 USD
View
B
Retailer 5
-
$2,417 NZD
$1,360 USD
View
B
Retailer 6
-
$2,424 NZD
£1,074 GBP
View
B
Retailer 7
-
$2,760 NZD
€1,479 EUR
View
Retailer 8
-
$2,794 NZD
A$2,418 AUD
View
Price last confirmed 29 days ago
B
Retailer 9
-
$3,476 NZD
CA$2,716 CAD
View
Most Expensive
B
MOH London
F73821336 · Nov 1
$3,914 NZD
£1,734 GBP
View
9 more retailers have this diamond
Prices start from $1,857 NZDSave up to $2,057 NZD

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
$1,857 NZD