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Oval|Lab Grown|IGI

1.66ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG817677086

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG817677086

Diamond specifications and retailer prices

From €257 EUR
$288 USD
As of November 1, 2026
Save €2,525 EUR (91%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €2,782 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 LG817677086 or 817677086. Listed at 24 retailers as of November 1, 2026, with prices from €257 to €2,782, a €2,525 spread on the same certified stone. Brilliant Earth lists it at €2,782. 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 angle35.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817677086
Dimensions9.50 × 6.70 × 4.16 mm
L/W Ratio1.42
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
9.50 mm6.70 mm1.66 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817677086
Side View
Table 60.0%Crown 35.2°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.1%

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: €2,782 EUR|Low: €257 EUR|High: €3,343 EUR|Avg: €1,008 EUR|-16.8%
Brilliant Earth
Retailer 2
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Retailer 24
November 2, 2026
Retailer 4€257 EUR
Retailer 15€287 EUR
Retailer 10€298 EUR
Retailer 5€318 EUR
Retailer 13€371 EUR
Retailer 23€459 EUR
Retailer 16€522 EUR
Retailer 19€606 EUR
Retailer 18€621 EUR
Retailer 11€622 EUR
Retailer 21€648 EUR
Retailer 22€819 EUR
Retailer 12€834 EUR
Retailer 2€859 EUR
Retailer 9€1,130 EUR
Retailer 7€1,223 EUR
Retailer 14€1,274 EUR
Retailer 8€1,306 EUR
Retailer 3€1,372 EUR
Retailer 20€1,407 EUR
Retailer 17€1,842 EUR
Retailer 6€2,282 EUR
Retailer 24€2,412 EUR
Brilliant Earth€2,782 EUR

32 data points across 24 retailers

24 retailers€257 EUR to €2,782 EUR

A
Cheapest Retailer
-
€257 EUR
$288 USD
A
Retailer 2
-
€287 EUR
$322 USD
View
Final sale: no returns
A
Retailer 3
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€298 EUR
$334 USD
View
A
Retailer 4
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€318 EUR
$357 USD
View
A
Retailer 5
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€371 EUR
£328 GBP
View
A
Retailer 6
-
€459 EUR
$515 USD
View
A
Retailer 7
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€522 EUR
$586 USD
View
A
Retailer 8
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€606 EUR
ZAR 10,976 ZAR
View
A
Retailer 9
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€621 EUR
£549 GBP
View
A
Retailer 10
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€622 EUR
$698 USD
View
A
Retailer 11
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€648 EUR
A$1,118 AUD
View
A
Retailer 12
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€819 EUR
A$1,413 AUD
View
A
Retailer 13
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€834 EUR
$935 USD
View
B+
Retailer 14
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€859 EUR
$964 USD
View
B+
Retailer 15
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€1,130 EUR
$1,267 USD
View
B+
Retailer 16
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€1,223 EUR
$1,372 USD
View
B+
Retailer 17
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€1,274 EUR
$1,429 USD
View
B+
Retailer 18
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€1,306 EUR
SGD 1,980 SGD
View
B+
Retailer 19
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€1,372 EUR
£1,212 GBP
View
B+
Retailer 20
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€1,407 EUR
£1,243 GBP
View
Retailer 21
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€1,842 EUR
A$3,179 AUD
View
Price last confirmed 25 days ago
B
Retailer 22
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€2,282 EUR
$2,560 USD
View
B
Retailer 23
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€2,412 EUR
$2,705 USD
View
Most Expensive
B
Brilliant Earth
22138102Y · Nov 2
€2,782 EUR
$3,120 USD
View
23 more retailers have this diamond
Prices start from €257 EURSave up to €2,525 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
€257 EUR