CaratHunter
Plans
Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

VG • H/SI2 • GIA 5182091620

Certificate GIA 5182091620

Diamond specifications and retailer prices

From $959 SGD
$750 USD
As of November 1, 2026
Save $1,797 SGD (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,756 SGD 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 $959 to $2,756, a $1,797 spread on the same certified stone. Diamond Quarter lists it at $2,756. 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
Colour
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: $1,141 SGD|Low: $959 SGD|High: $1,772 SGD|Avg: $1,230 SGD|+5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 4$959 SGD
Retailer 5$1,072 SGD
Retailer 1$1,141 SGD
Retailer 2$1,238 SGD
Retailer 3$1,751 SGD

38 data points across 5 retailers

7 retailers$959 SGD to $2,756 SGD

A
Cheapest Retailer
-
$959 SGD
$750 USD
B+
Retailer 2
-
$1,072 SGD
$838 USD
View
B+
Retailer 3
-
$1,141 SGD
£703 GBP
View
B+
Retailer 4
-
$1,238 SGD
€922 EUR
View
B
Retailer 5
-
$1,642 SGD
€1,223 EUR
View
B
Retailer 6
-
$1,751 SGD
£1,078 GBP
View
Most Expensive
C
Diamond Quarter
0.66SI2H51200965N · Nov 2
$2,756 SGD
£1,697 GBP
View
6 more retailers have this diamond
Prices start from $959 SGDSave up to $1,797 SGD

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
$959 SGD