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Oval|Lab Grown|IGI

1.66ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG811602532

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG811602532

Diamond specifications and retailer prices

From $406 USD
As of November 1, 2026
Save $4,914 USD (92%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $5,320 USD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

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 top-tier cut grade and certified by IGI LG811602532 or 811602532. Listed at 26 retailers as of November 1, 2026, with prices from $406 to $5,320, a $4,914 spread on the same certified stone. Brilliant Earth lists it at $5,320. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.66
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811602532
Dimensions9.71 × 6.68 × 4.09 mm
L/W Ratio1.45
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
9.71 mm6.68 mm1.66 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811602532
Side View
Table 59.0%Crown 35.6°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $5,320 USD|Low: $406 USD|High: $5,320 USD|Avg: $1,123 USD
Brilliant Earth
Retailer 2
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Retailer 23
November 3, 2026
Retailer 19$406 USD
Retailer 3$455 USD
Retailer 9$455 USD
Retailer 6$504 USD
Retailer 22$504 USD
Retailer 13$533 USD
Retailer 10$550 USD
Retailer 11$678 USD
Retailer 21$680 USD
Retailer 8$752 USD
Retailer 5$803 USD
Retailer 18$822 USD
Retailer 17$869 USD
Retailer 20$1,173 USD
Retailer 7$1,231 USD
Retailer 4$1,413 USD
Retailer 15$1,605 USD
Retailer 23$1,620 USD
Retailer 16$1,655 USD
Retailer 12$1,852 USD
Retailer 14$1,886 USD
Retailer 2$1,969 USD
Brilliant Earth$5,320 USD

29 data points across 23 retailers

26 retailers$406 USD to $5,320 USD

A
Cheapest Retailer
-
$406 USD
A
Retailer 2
-
$455 USD
View
Final sale: no returns
A
Retailer 3
-
$455 USD
View
A
Retailer 4
-
$504 USD
View
Retailer 5
-
$504 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$533 USD
£420 GBP
View
A
Retailer 7
-
$550 USD
HK$4,300 HKD
View
A
Retailer 8
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$678 USD
View
A
Retailer 9
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$680 USD
View
A
Retailer 10
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$752 USD
View
A
Retailer 11
-
$803 USD
€765 EUR
View
A
Retailer 12
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$822 USD
£647 GBP
View
A
Retailer 13
-
$869 USD
ZAR 14,039 ZAR
View
B+
Retailer 14
-
$1,173 USD
A$1,805 AUD
View
B+
Retailer 15
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$1,231 USD
View
B+
Retailer 16
-
$1,413 USD
View
B+
Retailer 17
-
$1,605 USD
SGD 2,169 SGD
View
B+
Retailer 18
-
$1,620 USD
View
B+
Retailer 19
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$1,655 USD
View
B+
Retailer 20
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$1,754 USD
View
B
Retailer 21
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$1,852 USD
View
B
Retailer 22
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$1,886 USD
View
B+
Retailer 23
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$1,969 USD
£1,550 GBP
View
Retailer 24
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$2,134 USD
£1,680 GBP
View
Price last confirmed 12 days ago
B
Retailer 25
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$2,840 USD
View
Most Expensive
B
Brilliant Earth
20513645A · Nov 1
$5,320 USD
View
25 more retailers have this diamond
Prices start from $406 USDSave up to $4,914 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
$406 USD