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Radiant|Lab Grown|IGI

1.68ct F IF Radiant Lab Grown Diamond

VG • F/IF • IGI LG816615263

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

Certificate IGI LG816615263

Diamond specifications and retailer prices

From $415 AUD
As of November 4, 2026
Save $3,263 AUD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,678 AUD at Brilliant Earth · As of November 4, 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816615263 or 816615263. Listed at 13 retailers as of November 4, 2026, with prices from $415 to $3,678, a $3,263 spread on the same certified stone. Brilliant Earth lists it at $3,678. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.68
Carat
F
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615263
Dimensions8.54 × 5.84 × 3.82 mm
L/W Ratio1.46
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
8.54 mm5.84 mm1.68 ctF / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615263
Side View
Table 63.0%Crown 42.1°Girdle: MediumPavilion 35.6°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
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 4
Current: $3,678 AUD|Low: $334 AUD|High: $4,718 AUD|Avg: $1,636 AUD|-22.1%
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
November 5, 2026
Retailer 11$415 AUD
Retailer 17$574 AUD
Retailer 13$626 AUD
Retailer 4$670 AUD
Retailer 7$860 AUD
Retailer 3$861 AUD
Retailer 6$892 AUD
Retailer 16$1,187 AUD
Retailer 12$1,317 AUD
Retailer 14$1,494 AUD
Retailer 8$1,731 AUD
Retailer 9$1,741 AUD
Retailer 15$1,778 AUD
Retailer 10$2,026 AUD
Retailer 2$3,293 AUD
Retailer 5$3,371 AUD
Brilliant Earth$3,678 AUD

22 data points across 17 retailers

13 retailers$415 AUD to $3,678 AUD

A
Cheapest Retailer
-
$415 AUD
Final sale: no returns
A
Retailer 2
-
$574 AUD
View
B+
Retailer 3
-
$626 AUD
View
A
Retailer 4
-
$670 AUD
View
A
Retailer 5
-
$861 AUD
View
A
Retailer 6
-
$1,187 AUD
View
B+
Retailer 7
-
$1,317 AUD
View
B+
Retailer 8
-
$1,494 AUD
View
B+
Retailer 9
-
$1,778 AUD
View
B+
Retailer 10
-
$2,026 AUD
View
B
Retailer 11
-
$3,293 AUD
View
Retailer 12
-
$3,371 AUD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21730775Y · Nov 4
$3,678 AUD
$2,580 USD
View
12 more retailers have this diamond
Prices start from $415 AUDSave up to $3,263 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
$415 AUD