Radiant|Lab Grown|IGI

1.67ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG744514675

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG744514675

Diamond specifications and retailer prices

From $280 USD
As of October 30, 2026
Save $3,140 USD (92%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,420 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.67ct lab-grown radiant diamond

This 1.67ct lab-grown radiant 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 LG744514675 or 744514675. Listed at 17 retailers as of October 30, 2026, with prices from $280 to $3,420, a $3,140 spread on the same certified stone. Brilliant Earth lists it at $3,420. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.67
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744514675
Dimensions8.76 × 5.91 × 3.72 mm
L/W Ratio1.48
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
8.76 mm5.91 mm1.67 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744514675
Side View
Table 65.0%Crown 39.2°Girdle: Slightly ThickPavilion 32°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $3,420 USD|Low: $250 USD|High: $3,970 USD|Avg: $1,300 USD|-13.9%
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
October 31, 2026
Retailer 12$280 USD
Retailer 4$325 USD
Retailer 9$350 USD
Retailer 13$525 USD
Retailer 16$573 USD
Retailer 7$575 USD
Retailer 2$637 USD
Retailer 11$894 USD
Retailer 8$957 USD
Retailer 15$1,068 USD
Retailer 3$1,098 USD
Retailer 17$1,233 USD
Retailer 6$1,579 USD
Retailer 10$1,788 USD
Retailer 14$2,490 USD
Retailer 5$2,890 USD
Brilliant Earth$3,420 USD

34 data points across 17 retailers

17 retailers$280 USD to $3,420 USD

A
Cheapest Retailer
-
$280 USD
A
Retailer 2
-
$325 USD
View
A
Retailer 3
-
$350 USD
View
Final sale: no returns
A
Retailer 4
-
$525 USD
View
A
Retailer 5
-
$573 USD
View
A
Retailer 6
-
$575 USD
View
Retailer 7
-
$637 USD
€607 EUR
View
A
Retailer 8
-
$894 USD
A$1,376 AUD
View
A
Retailer 9
-
$957 USD
View
A
Retailer 10
-
$1,068 USD
View
A
Retailer 11
-
$1,098 USD
View
B+
Retailer 12
-
$1,233 USD
View
Retailer 13
-
$1,579 USD
£1,243 GBP
View
Price last confirmed 12 days ago
B+
Retailer 14
-
$1,788 USD
A$2,750 AUD
View
B
Retailer 15
-
$2,490 USD
View
B
Retailer 16
-
$2,890 USD
View
Most Expensive
B
Brilliant Earth
17388439Y · Oct 30
$3,420 USD
View
16 more retailers have this diamond
Prices start from $280 USDSave up to $3,140 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
1.67ct Radiant
$280 USD