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Round|Lab Grown|IGI

5.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG818623896

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818623896

Diamond specifications and retailer prices

From €6,222 EUR
$6,951 USD
As of October 31, 2026
Save €37,852 EUR (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €44,074 EUR at Mervis Diamond Importers · As of October 31, 2026
View at Mervis Diamond Importers

About this 5.51ct lab-grown round diamond

This 5.51ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818623896 or 818623896. Listed at 21 retailers as of October 31, 2026, with prices from €6,222 to €44,074, a €37,852 spread on the same certified stone. Mervis Diamond Importers lists it at €44,074. 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

5.51
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818623896
Dimensions11.31 × 11.26 × 7.01 mm
L/W Ratio1.00
Girdle conditionFaceted
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
11.31 mm11.26 mm5.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818623896
Side View
Table 58.0%Crown 35.3°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.1%

Caratlytics Score

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A+
Exceptional
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: Oct 31
Current: €44,074 EUR|Low: €6,222 EUR|High: €52,840 EUR|Avg: €17,061 EUR|-16.6%
Mervis Diamond Importers
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
Retailer 16
November 1, 2026
Retailer 7€6,222 EUR
Retailer 9€6,431 EUR
Retailer 15€7,640 EUR
Retailer 14€7,664 EUR
Retailer 5€8,226 EUR
Retailer 2€8,907 EUR
Retailer 16€9,350 EUR
Retailer 13€11,238 EUR
Retailer 8€13,364 EUR
Retailer 12€14,298 EUR
Retailer 11€14,453 EUR
Retailer 10€16,403 EUR
Retailer 3€17,738 EUR
Retailer 6€24,340 EUR
Retailer 4€38,229 EUR
Mervis Diamond Importers€44,074 EUR

38 data points across 16 retailers

21 retailers€6,222 EUR to €44,074 EUR

A+
Cheapest Retailer
-
€6,222 EUR
$6,951 USD
Final sale: no returns
A
Retailer 2
-
€6,431 EUR
$7,185 USD
View
Retailer 3
-
€6,633 EUR
$7,410 USD
View
Price last confirmed 21 days ago
Retailer 4
-
€6,898 EUR
$7,707 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
€7,640 EUR
$8,535 USD
View
A
Retailer 6
-
€7,664 EUR
$8,562 USD
View
Retailer 7
-
€7,694 EUR
$8,596 USD
View
Price last confirmed 29 days ago
Retailer 8
-
€7,694 EUR
$8,596 USD
View
Price last confirmed 19 days ago
Retailer 9
-
€8,226 EUR
$9,190 USD
View
Price last confirmed 13 days ago
A
Retailer 10
-
€8,907 EUR
£7,835 GBP
View
A
Retailer 11
-
€9,350 EUR
$10,446 USD
View
Retailer 12
-
€9,552 EUR
$10,671 USD
View
Price last confirmed 24 days ago
A
Retailer 13
-
€11,238 EUR
View
A
Retailer 14
-
€13,364 EUR
$14,930 USD
View
A
Retailer 15
-
€14,298 EUR
£12,578 GBP
View
A
Retailer 16
-
€14,453 EUR
ZAR 260,864 ZAR
View
B+
Retailer 17
-
€16,403 EUR
$18,325 USD
View
B+
Retailer 18
-
€17,738 EUR
$19,817 USD
View
B+
Retailer 19
-
€24,340 EUR
$27,193 USD
View
B
Retailer 20
-
€38,229 EUR
$42,710 USD
View
Most Expensive
B
Mervis Diamond Importers
1984816699 · Oct 31
€44,074 EUR
$49,240 USD
View
20 more retailers have this diamond
Prices start from €6,222 EURSave up to €37,852 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+
5.51ct Round
€6,222 EUR