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Oval|Lab Grown|IGI

1.66ct D IF Oval Lab Grown Diamond

VG • D/IF • IGI LG814638725

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG814638725

Diamond specifications and retailer prices

From $328 USD
As of November 1, 2026
Save $2,457 USD (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,785 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 1.66ct lab-grown oval diamond

This 1.66ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG814638725 or 814638725. Listed at 15 retailers as of November 1, 2026, with prices from $328 to $2,785, a $2,457 spread on the same certified stone. Rare Carat lists it at $2,785. 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
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG814638725
Dimensions9.76 × 6.70 × 4.01 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.76 mm6.70 mm1.66 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG814638725
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 59.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,457 USD|Low: $328 USD|High: $1,490 USD|Avg: $864 USD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 3, 2026
Retailer 3$328 USD
Retailer 4$363 USD
Retailer 7$384 USD
Retailer 13$502 USD
Retailer 11$505 USD
Retailer 9$626 USD
Retailer 8$638 USD
Retailer 10$845 USD
Retailer 12$1,116 USD
Retailer 5$1,193 USD
Retailer 6$1,216 USD
Retailer 14$1,397 USD
Retailer 1$1,457 USD
Retailer 2$1,490 USD

30 data points across 14 retailers

15 retailers$328 USD to $2,785 USD

A
Cheapest Retailer
-
$328 USD
Final sale: no returns
Retailer 2
-
$363 USD
View
Price last confirmed 25 days ago
A
Retailer 3
-
$384 USD
£303 GBP
View
A
Retailer 4
-
$502 USD
View
A
Retailer 5
-
$505 USD
View
A
Retailer 6
-
$626 USD
ZAR 10,121 ZAR
View
A
Retailer 7
-
$638 USD
£502 GBP
View
A
Retailer 8
-
$845 USD
A$1,300 AUD
View
B+
Retailer 9
-
$1,116 USD
View
B+
Retailer 10
-
$1,193 USD
View
B+
Retailer 11
-
$1,216 USD
View
B+
Retailer 12
-
$1,397 USD
View
B+
Retailer 13
-
$1,457 USD
£1,147 GBP
View
B+
Retailer 14
-
$1,490 USD
View
Most Expensive
B
Rare Carat
VK9833_l_814638725 · Nov 1
$2,785 USD
View
14 more retailers have this diamond
Prices start from $328 USDSave up to $2,457 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.

A
1.66ct Oval
$328 USD