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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 $372 SGD
As of November 4, 2026
Save $2,924 SGD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,295 SGD 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 $372 to $3,295, a $2,924 spread on the same certified stone. Brilliant Earth lists it at $3,295. 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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $3,295 SGD|Low: $299 SGD|High: $4,228 SGD|Avg: $1,466 SGD|-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$372 SGD
Retailer 17$515 SGD
Retailer 13$561 SGD
Retailer 4$600 SGD
Retailer 7$770 SGD
Retailer 3$771 SGD
Retailer 6$800 SGD
Retailer 16$1,064 SGD
Retailer 12$1,180 SGD
Retailer 14$1,339 SGD
Retailer 8$1,551 SGD
Retailer 9$1,560 SGD
Retailer 15$1,593 SGD
Retailer 10$1,815 SGD
Retailer 2$2,951 SGD
Retailer 5$3,021 SGD
Brilliant Earth$3,295 SGD

22 data points across 17 retailers

13 retailers$372 SGD to $3,295 SGD

A
Cheapest Retailer
-
$372 SGD
Final sale: no returns
A
Retailer 2
-
$515 SGD
View
B+
Retailer 3
-
$561 SGD
View
A
Retailer 4
-
$600 SGD
View
A
Retailer 5
-
$771 SGD
View
A
Retailer 6
-
$1,064 SGD
View
B+
Retailer 7
-
$1,180 SGD
View
B+
Retailer 8
-
$1,339 SGD
View
B+
Retailer 9
-
$1,593 SGD
View
B+
Retailer 10
-
$1,815 SGD
View
B
Retailer 11
-
$2,951 SGD
View
Retailer 12
-
$3,021 SGD
View
Price last confirmed 19 days ago
Most Expensive
B
Brilliant Earth
21730775Y · Nov 4
$3,295 SGD
$2,580 USD
View
12 more retailers have this diamond
Prices start from $372 SGDSave up to $2,924 SGD

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
$372 SGD