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Oval|Natural|HRD

1.66ct K SI1 Oval Natural Diamond

K/SI1 • HRD 14024677007

Certificate HRD 14024677007

Diamond specifications and retailer prices

From $5,865 USD
As of November 6, 2026
Save $2,884 USD (33%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $8,749 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.66ct natural oval diamond

This 1.66ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included) and certified by HRD 14024677007. Listed at 2 retailers as of November 4, 2026, with prices from $5,865 to $8,749, a $2,884 spread on the same certified stone. MOH London lists it at $8,749. 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
K
Color
SI1
Clarity
-
Cut

Specifications

Cut
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabHRD
CertificateHRD 14024677007
Dimensions9.11 × 7.18 × 2.94 mm
L/W Ratio1.27
Girdle conditionFaceted
Top View
9.11 mm7.18 mm1.66 ctK / SI1
OriginNatural
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateHRD 14024677007
Side View
Table 58.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 40.9%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 6
Current: $8,749 USD|Low: $5,408 USD|High: $8,879 USD|Avg: $6,692 USD|-0.3%
MOH London
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$5,408 USD
Retailer 2$5,865 USD
MOH London$8,749 USD

27 data points across 3 retailers

2 retailers$5,865 USD to $8,749 USD

C
Cheapest Retailer
-
$5,865 USD
Most Expensive
C
MOH London
2460F432B · Nov 4
$8,749 USD
£6,889 GBP
View
1 more retailer has this diamond
Prices start from $5,865 USDSave up to $2,884 USD

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.

C
1.66ct Oval
$5,865 USD