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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 $297 USD
As of November 1, 2026
Save $2,313 USD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,610 USD at Brilliant Earth · As of November 2, 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 1, 2026, with prices from $297 to $2,610, a $2,313 spread on the same certified stone. Brilliant Earth lists it at $2,610. 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
Color
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 1
Current: $2,610 USD|Low: $234 USD|High: $3,310 USD|Avg: $1,156 USD|-21.1%
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 2, 2026
Retailer 16$297 USD
Retailer 17$433 USD
Retailer 3$468 USD
Retailer 13$470 USD
Retailer 7$603 USD
Retailer 11$605 USD
Retailer 6$627 USD
Retailer 12$841 USD
Retailer 2$941 USD
Retailer 4$1,105 USD
Retailer 8$1,214 USD
Retailer 9$1,221 USD
Retailer 5$1,260 USD
Retailer 10$1,450 USD
Retailer 15$2,350 USD
Retailer 14$2,365 USD
Brilliant Earth$2,610 USD

19 data points across 17 retailers

13 retailers$297 USD to $2,610 USD

A
Cheapest Retailer
-
$297 USD
Final sale: no returns
A
Retailer 2
-
$433 USD
View
B+
Retailer 3
-
$468 USD
View
A
Retailer 4
-
$470 USD
View
A
Retailer 5
-
$605 USD
€576 EUR
View
A
Retailer 6
-
$841 USD
A$1,294 AUD
View
B+
Retailer 7
-
$941 USD
View
B+
Retailer 8
-
$1,105 USD
View
B+
Retailer 9
-
$1,260 USD
View
B+
Retailer 10
-
$1,450 USD
£1,142 GBP
View
B
Retailer 11
-
$2,350 USD
View
Retailer 12
-
$2,365 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
21730775Y · Nov 2
$2,610 USD
View
12 more retailers have this diamond
Prices start from $297 USDSave up to $2,313 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
1.68ct Radiant
$297 USD