Radiant|Lab Grown|IGI

3.10ct E FL Radiant Lab Grown Diamond

EX • E/FL • IGI LG821638890

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

Certificate IGI LG821638890

Diamond specifications and retailer prices

From $1,980 USD
As of October 29, 2026
Save $9,270 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,250 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.1ct lab-grown radiant diamond

This 3.1ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821638890 or 821638890. Listed at 13 retailers as of October 29, 2026, with prices from $1,980 to $11,250, a $9,270 spread on the same certified stone. Brilliant Earth lists it at $11,250. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.10
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638890
Dimensions10.40 × 7.16 × 4.73 mm
L/W Ratio1.45
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
10.40 mm7.16 mm3.10 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638890
Side View
Table 63.0%Crown 44.8°Girdle: MED-STKPavilion 34°Culet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $11,250 USD|Low: $1,955 USD|High: $11,805 USD|Avg: $6,156 USD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6$1,980 USD
Retailer 10$2,573 USD
Retailer 7$2,926 USD
Retailer 2$3,212 USD
Retailer 9$3,289 USD
Retailer 12$3,875 USD
Retailer 11$5,871 USD
Retailer 5$6,300 USD
Retailer 3$6,320 USD
Retailer 4$9,064 USD
Retailer 8$11,030 USD
Brilliant Earth$11,250 USD

27 data points across 12 retailers

13 retailers$1,980 USD to $11,250 USD

A
Retailer 1
-
$1,855 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$1,980 USD
View
A
Retailer 3
-
$2,019 USD
View
Price last confirmed 15 days ago
A
Retailer 4
-
$2,573 USD
View
A
Retailer 5
-
$2,926 USD
View
A
Retailer 6
-
$3,212 USD
View
A
Retailer 7
-
$3,289 USD
View
B+
Retailer 8
-
$4,034 USD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$5,871 USD
£4,623 GBP
View
B+
Retailer 10
-
$6,300 USD
View
B+
Retailer 11
-
$6,320 USD
View
Price last confirmed 13 days ago
B
Retailer 12
-
$11,030 USD
View
Most Expensive
B
Brilliant Earth
22257764Y · Oct 29
$11,250 USD
View
12 more retailers have this diamond
Prices start from $1,980 USDSave up to $9,270 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
3.10ct Radiant
$1,980 USD