CaratHunter
Plans
Oval|Lab Grown|IGI

1.66ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG815677209

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG815677209

Diamond specifications and retailer prices

From €317 EUR
$356 USD
As of November 1, 2026
Save €2,473 EUR (89%) vs most expensive(unlock to see where)
24 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 LG815677209 or 815677209. Listed at 24 retailers as of November 1, 2026, with prices from €317 to €2,791, a €2,473 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815677209
Dimensions9.58 × 6.65 × 4.15 mm
L/W Ratio1.44
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
9.58 mm6.65 mm1.66 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815677209
Side View
Table 59.0%Crown 34.3°Girdle: MED-THKPavilion 40.5°Culet: NoneDepth 62.4%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: €2,791 EUR|Low: €317 EUR|High: €3,798 EUR|Avg: €1,104 EUR|-26.5%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 5€317 EUR
Retailer 10€371 EUR
Retailer 14€490 EUR
Retailer 17€495 EUR
Retailer 13€569 EUR
Retailer 12€606 EUR
Retailer 11€621 EUR
Retailer 6€793 EUR
Retailer 16€819 EUR
Retailer 15€858 EUR
Retailer 4€1,071 EUR
Retailer 8€1,170 EUR
Retailer 2€1,351 EUR
Retailer 3€1,399 EUR
Retailer 7€1,410 EUR
Retailer 9€2,479 EUR
Brilliant Earth€2,791 EUR

28 data points across 17 retailers

24 retailers€317 EUR to €2,791 EUR

Retailer 1
-
€286 EUR
$321 USD
Price last confirmed 23 days ago
Retailer 2
-
€290 EUR
$325 USD
View
Price last confirmed 40 days ago
A
Retailer 3
-
€317 EUR
$356 USD
View
Final sale: no returns
Retailer 4
-
€336 EUR
$377 USD
View
Price last confirmed 37 days ago
Retailer 5
-
€355 EUR
$398 USD
View
Price last confirmed 21 days ago
Retailer 6
-
€355 EUR
$398 USD
View
Price last confirmed 38 days ago
Retailer 7
-
€355 EUR
$398 USD
View
Price last confirmed 31 days ago
A
Retailer 8
-
€371 EUR
£328 GBP
View
A
Retailer 9
-
€490 EUR
$550 USD
View
A
Retailer 10
-
€495 EUR
$555 USD
View
A
Retailer 11
-
€569 EUR
View
A
Retailer 12
-
€606 EUR
ZAR 10,976 ZAR
View
A
Retailer 13
-
€621 EUR
£549 GBP
View
A
Retailer 14
-
€793 EUR
$889 USD
View
A
Retailer 15
-
€819 EUR
A$1,413 AUD
View
A
Retailer 16
-
€858 EUR
$962 USD
View
B+
Retailer 17
-
€1,071 EUR
$1,201 USD
View
Retailer 18
-
€1,142 EUR
$1,281 USD
View
Price last confirmed 26 days ago
B+
Retailer 19
-
€1,170 EUR
$1,312 USD
View
B+
Retailer 20
-
€1,351 EUR
$1,515 USD
View
B+
Retailer 21
-
€1,399 EUR
$1,569 USD
View
Retailer 22
-
€1,410 EUR
£1,245 GBP
View
Price last confirmed 7 days ago
B
Retailer 23
-
€2,479 EUR
$2,780 USD
View
Most Expensive
B
Brilliant Earth
21017101A · Nov 2
€2,791 EUR
$3,130 USD
View
23 more retailers have this diamond
Prices start from €317 EURSave up to €2,473 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
€317 EUR