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Round|Lab Grown|IGI

1.68ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG638478375

Shape and cutting style on the report: Round brilliant

Certificate IGI LG638478375

Diamond specifications and retailer prices

From $376 USD
As of November 1, 2026
Save $2,274 USD (86%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,650 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.68ct lab-grown round diamond

This 1.68ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG638478375 or 638478375. Listed at 24 retailers as of October 31, 2026, with prices from $376 to $2,650, a $2,274 spread on the same certified stone. Brilliant Earth lists it at $2,650. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG638478375
Dimensions7.65 × 7.69 × 4.71 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.65 mm7.69 mm1.68 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG638478375
Side View
Table 55.0%Crown 33.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.4%

Caratlytics Score

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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: $2,650 USD|Low: $376 USD|High: $2,670 USD|Avg: $1,195 USD|-0.7%
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
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 11$376 USD
Retailer 10$421 USD
Retailer 20$430 USD
Retailer 7$466 USD
Retailer 4$615 USD
Retailer 3$625 USD
Retailer 19$718 USD
Retailer 18$749 USD
Retailer 13$804 USD
Retailer 15$834 USD
Retailer 5$1,055 USD
Retailer 17$1,082 USD
Retailer 2$1,176 USD
Retailer 6$1,499 USD
Retailer 8$1,538 USD
Retailer 9$1,747 USD
Retailer 14$1,822 USD
Retailer 16$1,994 USD
Retailer 12$2,200 USD
Brilliant Earth$2,650 USD

42 data points across 20 retailers

24 retailers$376 USD to $2,650 USD

A
Cheapest Retailer
-
$376 USD
A
Retailer 2
-
$421 USD
View
A
Retailer 3
-
$430 USD
View
Final sale: no returns
A
Retailer 4
-
$466 USD
View
Retailer 5
-
$478 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$615 USD
View
A
Retailer 7
-
$625 USD
View
A
Retailer 8
-
$718 USD
View
A
Retailer 9
-
$749 USD
€713 EUR
View
A
Retailer 10
-
$804 USD
ZAR 12,995 ZAR
View
A
Retailer 11
-
$834 USD
£657 GBP
View
B+
Retailer 12
-
$1,055 USD
View
B+
Retailer 13
-
$1,082 USD
A$1,665 AUD
View
B+
Retailer 14
-
$1,176 USD
View
B
Retailer 15
-
$1,499 USD
View
B
Retailer 16
-
$1,538 USD
View
Retailer 17
-
$1,609 USD
A$2,475 AUD
View
Price last confirmed 158 days ago
B
Retailer 18
-
$1,747 USD
View
B+
Retailer 19
-
$1,822 USD
£1,435 GBP
View
B
Retailer 20
-
$1,994 USD
View
Retailer 21
-
$2,200 USD
View
Price last confirmed 12 days ago
Retailer 22
-
$2,214 USD
View
Price last confirmed 98 days ago
B
Retailer 23
-
$2,650 USD
View
Most Expensive
B
Brilliant Earth
14224910A · Oct 31
$2,650 USD
View
23 more retailers have this diamond
Prices start from $376 USDSave up to $2,274 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 Round
$376 USD