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Radiant|Lab Grown|IGI

3.10ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780666217

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

Certificate IGI LG780666217

Diamond specifications and retailer prices

From €1,505 EUR
$1,681 USD
As of October 30, 2026
Save €9,120 EUR (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €10,625 EUR at Brilliant Earth · As of October 31, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780666217 or 780666217. Listed at 15 retailers as of October 30, 2026, with prices from €1,505 to €10,625, a €9,120 spread on the same certified stone. Brilliant Earth lists it at €10,625. 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
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780666217
Dimensions10.18 × 7.26 × 4.73 mm
L/W Ratio1.40
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
10.18 mm7.26 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780666217
Side View
Table 61.0%Crown 41.9°Girdle: ThickPavilion 33°Culet: NoneDepth 65.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: €10,625 EUR|Low: €1,505 EUR|High: €14,858 EUR|Avg: €4,691 EUR|-11.7%
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
October 31, 2026
Retailer 11€1,505 EUR
Retailer 5€1,641 EUR
Retailer 10€1,841 EUR
Retailer 8€1,898 EUR
Retailer 13€2,240 EUR
Retailer 7€2,544 EUR
Retailer 4€2,749 EUR
Retailer 9€3,009 EUR
Retailer 2€3,224 EUR
Retailer 3€3,611 EUR
Retailer 15€4,834 EUR
Retailer 14€5,531 EUR
Retailer 6€5,679 EUR
Retailer 12€10,356 EUR
Brilliant Earth€10,625 EUR

34 data points across 15 retailers

15 retailers€1,505 EUR to €10,625 EUR

A
Cheapest Retailer
-
€1,505 EUR
$1,681 USD
A
Retailer 2
-
€1,641 EUR
$1,833 USD
View
A
Retailer 3
-
€1,841 EUR
$2,057 USD
View
A
Retailer 4
-
€1,898 EUR
$2,120 USD
View
A
Retailer 5
-
€2,240 EUR
$2,503 USD
View
A
Retailer 6
-
€2,544 EUR
$2,842 USD
View
Final sale: no returns
A
Retailer 7
-
€2,749 EUR
$3,071 USD
View
A
Retailer 8
-
€3,009 EUR
$3,362 USD
View
B+
Retailer 9
-
€3,224 EUR
View
B+
Retailer 10
-
€3,611 EUR
$4,034 USD
View
B+
Retailer 11
-
€4,834 EUR
$5,401 USD
View
B+
Retailer 12
-
€5,531 EUR
£4,866 GBP
View
Retailer 13
-
€5,679 EUR
$6,345 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
€10,356 EUR
$11,570 USD
View
Most Expensive
B
Brilliant Earth
19065709Y · Oct 31
€10,625 EUR
$11,870 USD
View
14 more retailers have this diamond
Prices start from €1,505 EURSave up to €9,120 EUR

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
€1,505 EUR