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Oval|Natural|IGI

1.66ct G SI2 Oval Natural Diamond

VG • G/SI2 • IGI 828653736

Shape and cutting style on the report: Oval brilliant

Certificate IGI 828653736

Diamond specifications and retailer prices

From $5,211 SGD
As of November 6, 2026
Save $304 SGD (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $5,515 SGD at William & Sons Jewelers · As of November 6, 2026
View at William & Sons Jewelers

About this 1.66ct natural oval diamond

This 1.66ct natural oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 828653736. Listed at 2 retailers as of November 6, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.66
Carat
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 828653736
Dimensions9.08 × 6.63 × 4.29 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizeNone
Top View
9.08 mm6.63 mm1.66 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 828653736
Side View
Table 61.0%Crown 35.9°Girdle: STK-THKPavilion 41.5°Culet: NoneDepth 64.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $5,211 SGD|Low: $5,211 SGD|High: $5,515 SGD|Avg: $5,363 SGD
Retailer 1
William & Sons Jewelers
November 6, 2026
Retailer 1$5,211 SGD
William & Sons Jewelers$5,515 SGD

1 data point across 2 retailers

2 retailers$5,211 SGD to $5,515 SGD

A
Cheapest Retailer
-
$5,211 SGD
Most Expensive
B+
William & Sons Jewelers
cert_828653736 · Nov 6
$5,515 SGD
$4,303 USD
View
Final sale: no returns
1 more retailer has this diamond
Prices start from $5,211 SGDSave up to $304 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
1.66ct Oval
$5,211 SGD