Radiant|Lab Grown|IGI

1.68ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG800677720

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

Certificate IGI LG800677720

Diamond specifications and retailer prices

From $573 USD
As of October 30, 2026
Save $4,757 USD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,330 USD at Brilliant Earth · As of October 29, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800677720 or 800677720. Listed at 14 retailers as of October 29, 2026, with prices from $573 to $5,330, a $4,757 spread on the same certified stone. Brilliant Earth lists it at $5,330. 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
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800677720
Dimensions8.39 × 5.76 × 3.94 mm
L/W Ratio1.46
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
8.39 mm5.76 mm1.68 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800677720
Side View
Table 64.0%Crown 42.3°Girdle: ThickPavilion 34.2°Culet: NoneDepth 68.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $5,330 USD|Low: $544 USD|High: $6,040 USD|Avg: $2,432 USD|-2.9%
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
October 29, 2026
Retailer 8$573 USD
Retailer 14$642 USD
Retailer 6$762 USD
Retailer 10$841 USD
Retailer 4$855 USD
Retailer 5$1,045 USD
Retailer 9$1,095 USD
Retailer 3$1,255 USD
Retailer 12$1,764 USD
Retailer 13$2,064 USD
Retailer 2$3,109 USD
Retailer 7$3,397 USD
Retailer 15$4,010 USD
Retailer 11$5,090 USD
Brilliant Earth$5,330 USD

29 data points across 15 retailers

14 retailers$573 USD to $5,330 USD

A
Cheapest Retailer
-
$573 USD
A
Retailer 2
-
$642 USD
View
A
Retailer 3
-
$762 USD
View
Final sale: no returns
A
Retailer 4
-
$841 USD
View
A
Retailer 5
-
$855 USD
View
A
Retailer 6
-
$1,045 USD
View
A
Retailer 7
-
$1,095 USD
View
B+
Retailer 8
-
$1,255 USD
€1,195 EUR
View
B+
Retailer 9
-
$1,764 USD
View
B+
Retailer 10
-
$2,064 USD
View
B
Retailer 11
-
$3,109 USD
£2,448 GBP
View
B
Retailer 12
-
$4,010 USD
View
B
Retailer 13
-
$5,090 USD
View
Most Expensive
B
Brilliant Earth
20497804Y · Oct 29
$5,330 USD
View
13 more retailers have this diamond
Prices start from $573 USDSave up to $4,757 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
$573 USD