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Oval|Lab Grown|IGI

1.66ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG731583042

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG731583042

Diamond specifications and retailer prices

From €265 EUR
$297 USD
As of November 1, 2026
Save €2,526 EUR (91%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: €2,791 EUR at Brilliant Earth · As of November 2, 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 LG731583042 or 731583042. Listed at 28 retailers as of November 1, 2026, with prices from €265 to €2,791, a €2,526 spread on the same certified stone. Brilliant Earth lists it at €2,791. 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 angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731583042
Dimensions9.52 × 6.71 × 4.18 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
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
9.52 mm6.71 mm1.66 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731583042
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

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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: €2,791 EUR|Low: €254 EUR|High: €3,513 EUR|Avg: €983 EUR|-20.6%
Brilliant Earth
Retailer 2
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Retailer 24
November 2, 2026
Retailer 5€265 EUR
Retailer 16€296 EUR
Retailer 6€328 EUR
Retailer 8€328 EUR
Retailer 22€365 EUR
Retailer 19€456 EUR
Retailer 21€459 EUR
Retailer 18€535 EUR
Retailer 10€564 EUR
Retailer 13€565 EUR
Retailer 2€576 EUR
Retailer 23€648 EUR
Retailer 20€763 EUR
Retailer 4€1,007 EUR
Retailer 9€1,054 EUR
Retailer 14€1,065 EUR
Retailer 15€1,097 EUR
Retailer 12€1,261 EUR
Retailer 3€1,320 EUR
Retailer 11€1,339 EUR
Retailer 17€1,374 EUR
Retailer 7€1,842 EUR
Retailer 24€2,474 EUR
Brilliant Earth€2,791 EUR

36 data points across 24 retailers

28 retailers€265 EUR to €2,791 EUR

A
Cheapest Retailer
-
€265 EUR
$297 USD
Retailer 2
-
€274 EUR
$307 USD
View
Price last confirmed 42 days ago
A
Retailer 3
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€296 EUR
$332 USD
View
Final sale: no returns
Retailer 4
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€328 EUR
$368 USD
View
Price last confirmed 8 days ago
A
Retailer 5
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€328 EUR
$368 USD
View
Retailer 6
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€335 EUR
$376 USD
View
Price last confirmed 42 days ago
A
Retailer 7
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€365 EUR
HK$3,200 HKD
View
A
Retailer 8
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€456 EUR
$512 USD
View
A
Retailer 9
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€459 EUR
$515 USD
View
A
Retailer 10
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€535 EUR
View
A
Retailer 11
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€564 EUR
$633 USD
View
A
Retailer 12
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€565 EUR
ZAR 10,244 ZAR
View
A
Retailer 13
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€576 EUR
£509 GBP
View
A
Retailer 14
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€648 EUR
A$1,118 AUD
View
A
Retailer 15
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€763 EUR
A$1,316 AUD
View
B+
Retailer 16
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€1,007 EUR
$1,130 USD
View
B+
Retailer 17
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€1,054 EUR
$1,182 USD
View
B+
Retailer 18
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€1,065 EUR
$1,194 USD
View
B+
Retailer 19
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€1,097 EUR
$1,230 USD
View
B+
Retailer 20
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€1,151 EUR
$1,291 USD
View
B+
Retailer 21
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€1,261 EUR
$1,414 USD
View
Retailer 22
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€1,320 EUR
£1,166 GBP
View
Price last confirmed 12 days ago
B+
Retailer 23
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€1,339 EUR
$1,502 USD
View
B+
Retailer 24
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€1,374 EUR
$1,541 USD
View
Retailer 25
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€1,842 EUR
A$3,179 AUD
View
Price last confirmed 25 days ago
B
Retailer 26
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€2,474 EUR
$2,775 USD
View
B
Retailer 27
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€2,695 EUR
£2,380 GBP
View
Most Expensive
B
Brilliant Earth
15722860A · Nov 2
€2,791 EUR
$3,130 USD
View
27 more retailers have this diamond
Prices start from €265 EURSave up to €2,526 EUR

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
€265 EUR