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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 HK$54,535 HKD
$6,951 USD
As of October 31, 2026
Save HK$331,787 HKD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$386,322 HKD 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 HK$54,535 to HK$386,322, a HK$331,787 spread on the same certified stone. Mervis Diamond Importers lists it at HK$386,322. 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

How it works →
A+
Exceptional
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 31
Current: HK$386,322 HKD|Low: HK$54,535 HKD|High: HK$463,155 HKD|Avg: HK$147,910 HKD|-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 7HK$54,535 HKD
Retailer 10HK$56,371 HKD
Retailer 15HK$66,963 HKD
Retailer 14HK$67,175 HKD
Retailer 5HK$72,102 HKD
Retailer 9HK$78,068 HKD
Retailer 16HK$81,956 HKD
Retailer 13HK$98,502 HKD
Retailer 8HK$117,136 HKD
Retailer 2HK$124,660 HKD
Retailer 12HK$126,688 HKD
Retailer 11HK$143,775 HKD
Retailer 3HK$155,481 HKD
Retailer 6HK$213,350 HKD
Retailer 4HK$335,090 HKD
Mervis Diamond ImportersHK$386,322 HKD

38 data points across 16 retailers

21 retailersHK$54,535 HKD to HK$386,322 HKD

A+
Cheapest Retailer
-
HK$54,535 HKD
$6,951 USD
Final sale: no returns
A
Retailer 2
-
HK$56,371 HKD
$7,185 USD
View
Retailer 3
-
HK$58,137 HKD
$7,410 USD
View
Price last confirmed 21 days ago
Retailer 4
-
HK$60,467 HKD
$7,707 USD
View
Price last confirmed 19 days ago
A
Retailer 5
-
HK$66,963 HKD
$8,535 USD
View
A
Retailer 6
-
HK$67,175 HKD
$8,562 USD
View
Retailer 7
-
HK$67,442 HKD
$8,596 USD
View
Price last confirmed 30 days ago
Retailer 8
-
HK$67,442 HKD
$8,596 USD
View
Price last confirmed 19 days ago
Retailer 9
-
HK$72,102 HKD
$9,190 USD
View
Price last confirmed 14 days ago
A
Retailer 10
-
HK$78,068 HKD
£7,835 GBP
View
A
Retailer 11
-
HK$81,956 HKD
$10,446 USD
View
Retailer 12
-
HK$83,721 HKD
$10,671 USD
View
Price last confirmed 25 days ago
A
Retailer 13
-
HK$98,502 HKD
€11,957 EUR
View
A
Retailer 14
-
HK$117,136 HKD
$14,930 USD
View
A
Retailer 15
-
HK$124,660 HKD
£12,511 GBP
View
A
Retailer 16
-
HK$126,688 HKD
ZAR 260,864 ZAR
View
B+
Retailer 17
-
HK$143,775 HKD
$18,325 USD
View
B+
Retailer 18
-
HK$155,481 HKD
$19,817 USD
View
B+
Retailer 19
-
HK$213,350 HKD
$27,193 USD
View
B
Retailer 20
-
HK$335,090 HKD
$42,710 USD
View
Most Expensive
B
Mervis Diamond Importers
1984816699 · Oct 31
HK$386,322 HKD
$49,240 USD
View
20 more retailers have this diamond
Prices start from HK$54,535 HKDSave up to HK$331,787 HKD

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
HK$54,535 HKD