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 $9,710 CAD
$6,951 USD
As of October 31, 2026
Save $59,074 CAD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $68,783 CAD 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 $9,710 to $68,783, a $59,074 spread on the same certified stone. Mervis Diamond Importers lists it at $68,783. 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
Color
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: $68,783 CAD|Low: $9,710 CAD|High: $82,463 CAD|Avg: $26,626 CAD|-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$9,710 CAD
Retailer 9$10,037 CAD
Retailer 15$11,923 CAD
Retailer 14$11,960 CAD
Retailer 5$12,838 CAD
Retailer 2$13,900 CAD
Retailer 16$14,592 CAD
Retailer 13$17,538 CAD
Retailer 8$20,856 CAD
Retailer 12$22,314 CAD
Retailer 11$22,556 CAD
Retailer 10$25,599 CAD
Retailer 3$27,683 CAD
Retailer 6$37,986 CAD
Retailer 4$59,662 CAD
Mervis Diamond Importers$68,783 CAD

38 data points across 16 retailers

21 retailers$9,710 CAD to $68,783 CAD

A+
Cheapest Retailer
-
$9,710 CAD
$6,951 USD
Final sale: no returns
A
Retailer 2
-
$10,037 CAD
$7,185 USD
View
Retailer 3
-
$10,351 CAD
$7,410 USD
View
Price last confirmed 21 days ago
Retailer 4
-
$10,766 CAD
$7,707 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
$11,923 CAD
$8,535 USD
View
A
Retailer 6
-
$11,960 CAD
$8,562 USD
View
Retailer 7
-
$12,008 CAD
$8,596 USD
View
Price last confirmed 29 days ago
Retailer 8
-
$12,008 CAD
$8,596 USD
View
Price last confirmed 19 days ago
Retailer 9
-
$12,838 CAD
$9,190 USD
View
Price last confirmed 13 days ago
A
Retailer 10
-
$13,900 CAD
£7,835 GBP
View
A
Retailer 11
-
$14,592 CAD
$10,446 USD
View
Retailer 12
-
$14,906 CAD
$10,671 USD
View
Price last confirmed 24 days ago
A
Retailer 13
-
$17,538 CAD
€11,957 EUR
View
A
Retailer 14
-
$20,856 CAD
$14,930 USD
View
A
Retailer 15
-
$22,314 CAD
£12,578 GBP
View
A
Retailer 16
-
$22,556 CAD
ZAR 260,864 ZAR
View
B+
Retailer 17
-
$25,599 CAD
$18,325 USD
View
B+
Retailer 18
-
$27,683 CAD
$19,817 USD
View
B+
Retailer 19
-
$37,986 CAD
$27,193 USD
View
B
Retailer 20
-
$59,662 CAD
$42,710 USD
View
Most Expensive
B
Mervis Diamond Importers
1984816699 · Oct 31
$68,783 CAD
$49,240 USD
View
20 more retailers have this diamond
Prices start from $9,710 CADSave up to $59,074 CAD

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
$9,710 CAD