Radiant|Lab Grown|IGI

1.68ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG825660118

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

Certificate IGI LG825660118

Diamond specifications and retailer prices

From $586 USD
As of October 30, 2026
Save $4,784 USD (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,370 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 LG825660118 or 825660118. Listed at 21 retailers as of October 29, 2026, with prices from $586 to $5,370, a $4,784 spread on the same certified stone. Brilliant Earth lists it at $5,370. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660118
Dimensions8.14 × 5.77 × 4.15 mm
L/W Ratio1.41
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
8.14 mm5.77 mm1.68 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660118
Side View
Table 64.0%Crown 45.5°Girdle: MED-STKPavilion 37.1°Culet: NoneDepth 71.9%

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: Oct 30
Current: $5,370 USD|Low: $586 USD|High: $5,370 USD|Avg: $2,012 USD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
Retailer 8
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Retailer 11
Retailer 12
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Retailer 17
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Retailer 19
Retailer 20
October 30, 2026
Retailer 10$586 USD
Retailer 17$656 USD
Retailer 6$680 USD
Retailer 9$726 USD
Retailer 15$855 USD
Retailer 20$1,117 USD
Retailer 2$1,136 USD
Retailer 19$1,185 USD
Retailer 14$1,249 USD
Retailer 4$1,320 USD
Retailer 3$1,638 USD
Retailer 7$1,911 USD
Retailer 5$2,118 USD
Retailer 16$2,318 USD
Retailer 11$2,352 USD
Retailer 8$2,472 USD
Retailer 13$3,171 USD
Retailer 18$3,464 USD
Retailer 12$4,035 USD
Brilliant Earth$5,370 USD

32 data points across 20 retailers

21 retailers$586 USD to $5,370 USD

A
Cheapest Retailer
-
$586 USD
A
Retailer 2
-
$656 USD
View
A
Retailer 3
-
$680 USD
View
Final sale: no returns
A
Retailer 4
-
$726 USD
View
Retailer 5
-
$775 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$855 USD
View
A
Retailer 7
-
$1,117 USD
View
A
Retailer 8
-
$1,136 USD
£894 GBP
View
A
Retailer 9
-
$1,185 USD
€1,129 EUR
View
B+
Retailer 10
-
$1,249 USD
ZAR 20,171 ZAR
View
B+
Retailer 11
-
$1,320 USD
View
B+
Retailer 12
-
$1,638 USD
View
B+
Retailer 13
-
$1,911 USD
View
B+
Retailer 14
-
$2,118 USD
£1,668 GBP
View
B+
Retailer 15
-
$2,318 USD
View
B+
Retailer 16
-
$2,352 USD
View
B+
Retailer 17
-
$2,472 USD
SGD 3,340 SGD
View
B
Retailer 18
-
$3,171 USD
£2,497 GBP
View
B
Retailer 19
-
$3,464 USD
View
B
Retailer 20
-
$4,035 USD
View
Most Expensive
B
Brilliant Earth
21433589A · Oct 29
$5,370 USD
View
20 more retailers have this diamond
Prices start from $586 USDSave up to $4,784 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
$586 USD