Radiant|Lab Grown|IGI

1.67ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG732520458

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

Certificate IGI LG732520458

Diamond specifications and retailer prices

From $270 USD
As of October 30, 2026
Save $3,150 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 LG732520458 or 732520458. Listed at 17 retailers as of October 30, 2026, with prices from $270 to $3,420, a $3,150 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 angle36.7°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732520458
Dimensions8.70 × 5.84 × 3.86 mm
L/W Ratio1.49
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
8.70 mm5.84 mm1.67 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732520458
Side View
Table 65.0%Crown 36.7°Girdle: MediumPavilion 34.5°Culet: NoneDepth 66.1%

Caratlytics Score

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A+
Exceptional
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: Oct 30
Current: $3,420 USD|Low: $247 USD|High: $3,970 USD|Avg: $1,360 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 30, 2026
Retailer 11$270 USD
Retailer 3$313 USD
Retailer 9$346 USD
Retailer 12$513 USD
Retailer 6$555 USD
Retailer 15$555 USD
Retailer 5$612 USD
Retailer 10$860 USD
Retailer 7$954 USD
Retailer 14$1,029 USD
Retailer 17$1,065 USD
Retailer 16$1,189 USD
Retailer 2$1,490 USD
Retailer 8$1,809 USD
Retailer 13$2,400 USD
Retailer 4$2,890 USD
Brilliant Earth$3,420 USD

34 data points across 17 retailers

17 retailers$270 USD to $3,420 USD

A+
Cheapest Retailer
-
$270 USD
A
Retailer 2
-
$313 USD
View
A
Retailer 3
-
$346 USD
View
Final sale: no returns
A
Retailer 4
-
$513 USD
View
A
Retailer 5
-
$555 USD
View
A
Retailer 6
-
$555 USD
View
A
Retailer 7
-
$612 USD
€583 EUR
View
A
Retailer 8
-
$860 USD
A$1,323 AUD
View
A
Retailer 9
-
$954 USD
View
A
Retailer 10
-
$1,029 USD
View
A
Retailer 11
-
$1,065 USD
View
A
Retailer 12
-
$1,189 USD
View
B+
Retailer 13
-
$1,490 USD
£1,173 GBP
View
Retailer 14
-
$1,809 USD
A$2,783 AUD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
$2,400 USD
View
B
Retailer 16
-
$2,890 USD
View
Most Expensive
B
Brilliant Earth
16112448Y · Oct 30
$3,420 USD
View
16 more retailers have this diamond
Prices start from $270 USDSave up to $3,150 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
$270 USD