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Radiant|Lab Grown|IGI

1.68ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG744514676

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

Certificate IGI LG744514676

Diamond specifications and retailer prices

From $401 AUD
$282 USD
As of October 30, 2026
Save $4,425 AUD (92%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,826 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.68ct lab-grown radiant diamond

This 1.68ct 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 LG744514676 or 744514676. Listed at 17 retailers as of October 30, 2026, with prices from $401 to $4,826, a $4,425 spread on the same certified stone. Brilliant Earth lists it at $4,826. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.7°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744514676
Dimensions8.23 × 5.73 × 4.13 mm
L/W Ratio1.44
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
8.23 mm5.73 mm1.68 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744514676
Side View
Table 66.0%Crown 45.7°Girdle: ThickPavilion 37.3°Culet: NoneDepth 72.1%

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: Oct 30
Current: $4,826 AUD|Low: $401 AUD|High: $7,104 AUD|Avg: $1,918 AUD|-32.1%
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 14$401 AUD
Retailer 6$466 AUD
Retailer 9$501 AUD
Retailer 15$750 AUD
Retailer 3$819 AUD
Retailer 10$819 AUD
Retailer 2$910 AUD
Retailer 13$1,280 AUD
Retailer 8$1,378 AUD
Retailer 17$1,528 AUD
Retailer 5$1,569 AUD
Retailer 4$1,765 AUD
Retailer 12$2,213 AUD
Retailer 11$2,555 AUD
Retailer 16$3,559 AUD
Retailer 7$4,136 AUD
Brilliant Earth$4,826 AUD

37 data points across 17 retailers

17 retailers$401 AUD to $4,826 AUD

A
Cheapest Retailer
-
$401 AUD
$282 USD
A
Retailer 2
-
$466 AUD
$327 USD
View
A
Retailer 3
-
$501 AUD
$352 USD
View
Final sale: no returns
A
Retailer 4
-
$750 AUD
$527 USD
View
A
Retailer 5
-
$819 AUD
$575 USD
View
A
Retailer 6
-
$819 AUD
$575 USD
View
A
Retailer 7
-
$910 AUD
€609 EUR
View
A
Retailer 8
-
$1,280 AUD
View
A
Retailer 9
-
$1,378 AUD
$968 USD
View
B+
Retailer 10
-
$1,528 AUD
$1,073 USD
View
A
Retailer 11
-
$1,569 AUD
$1,102 USD
View
B+
Retailer 12
-
$1,765 AUD
$1,240 USD
View
B+
Retailer 13
-
$2,213 AUD
£1,224 GBP
View
B+
Retailer 14
-
$2,555 AUD
View
B
Retailer 15
-
$3,559 AUD
$2,500 USD
View
B
Retailer 16
-
$4,136 AUD
$2,905 USD
View
Most Expensive
B
Brilliant Earth
17496203Y · Oct 31
$4,826 AUD
$3,390 USD
View
16 more retailers have this diamond
Prices start from $401 AUDSave up to $4,425 AUD

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
1.68ct Radiant
$401 AUD