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Radiant|Lab Grown|IGI

1.76ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG639405820

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

Certificate IGI LG639405820

Diamond specifications and retailer prices

From $832 USD
As of November 1, 2026
Save $1,833 USD (69%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,950 USD at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

About this 1.76ct lab-grown radiant diamond

This 1.76ct 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 top-tier cut grade and certified by IGI LG639405820 or 639405820. Listed at 4 retailers as of November 1, 2026, with a 220% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.76
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle29.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639405820
Dimensions8.96 × 5.88 × 3.80 mm
L/W Ratio1.52
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
8.96 mm5.88 mm1.76 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639405820
Side View
Table 66.0%Crown 41.7°Girdle: MediumPavilion 29.8°Culet: NoneDepth 64.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $3,950 USD|Low: $832 USD|High: $4,080 USD|Avg: $2,103 USD|-3.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 5$832 USD
Retailer 11$955 USD
Retailer 8$1,011 USD
Retailer 7$1,225 USD
Retailer 6$1,574 USD
Retailer 4$1,655 USD
Retailer 9$2,066 USD
Retailer 2$2,665 USD
Retailer 3$3,333 USD
Retailer 10$3,804 USD
Brilliant Earth$3,950 USD

6 data points across 11 retailers

4 retailers$832 USD to $2,665 USD

A
Cheapest Retailer
-
$832 USD
Retailer 2
-
$1,655 USD
View
Price last confirmed 14 days ago
B
Retailer 3
-
$2,665 USD
View
Most Expensive
Brilliant Earth
17792853Y · Oct 18
$3,950 USD
View
Price last confirmed 14 days ago
3 more retailers have this diamond
Prices start from $832 USDSave up to $1,833 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
1.76ct Radiant
$832 USD