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Radiant|Lab Grown|IGI

5.10ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG821639486

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

Certificate IGI LG821639486

Diamond specifications and retailer prices

From €8,307 EUR
$9,246 USD
As of October 29, 2026
Save €21,544 EUR (72%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €29,851 EUR at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.1ct lab-grown radiant diamond

This 5.1ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821639486 or 821639486. Listed at 14 retailers as of October 29, 2026, with prices from €8,307 to €29,851, a €21,544 spread on the same certified stone. Taylor and Hart lists it at €29,851. 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

5.10
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.5°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821639486
Dimensions12.21 × 8.59 × 5.68 mm
L/W Ratio1.42
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
12.21 mm8.59 mm5.10 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821639486
Side View
Table 63.0%Crown 43.5°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €11,466 EUR|Low: €8,307 EUR|High: €64,196 EUR|Avg: €19,838 EUR|-20.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
October 30, 2026
Retailer 10€8,307 EUR
Retailer 12€9,392 EUR
Retailer 13€9,973 EUR
Retailer 2€10,362 EUR
Retailer 9€10,544 EUR
Retailer 1€11,466 EUR
Retailer 8€15,901 EUR
Retailer 7€17,027 EUR
Retailer 4€17,356 EUR
Retailer 5€18,437 EUR
Retailer 6€19,278 EUR
Retailer 11€26,210 EUR
Taylor and Hart€29,851 EUR
Retailer 3€51,610 EUR

37 data points across 14 retailers

14 retailers€8,307 EUR to €29,851 EUR

A
Cheapest Retailer
-
€8,307 EUR
$9,246 USD
A
Retailer 2
-
€9,392 EUR
$10,453 USD
View
A
Retailer 3
-
€9,973 EUR
$11,100 USD
View
A
Retailer 4
-
€10,362 EUR
HK$90,100 HKD
View
Retailer 5
-
€10,544 EUR
$11,735 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
€11,466 EUR
£10,049 GBP
View
A
Retailer 7
-
€15,901 EUR
View
A
Retailer 8
-
€17,027 EUR
£14,922 GBP
View
B+
Retailer 9
-
€17,356 EUR
$19,317 USD
View
B+
Retailer 10
-
€18,437 EUR
$20,520 USD
View
B+
Retailer 11
-
€19,278 EUR
ZAR 346,633 ZAR
View
B+
Retailer 12
-
€26,210 EUR
$29,172 USD
View
Most Expensive
B+
Taylor and Hart
2R16V7D · Oct 30
€29,851 EUR
$33,224 USD
View
12 more retailers have this diamond
Prices start from €8,307 EURSave up to €21,544 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
5.10ct Radiant
€8,307 EUR