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Round|Lab Grown|IGI

5.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG768629057

Shape and cutting style on the report: Round brilliant

Certificate IGI LG768629057

Diamond specifications and retailer prices

From HK$60,216 HKD
$7,675 USD
As of November 1, 2026
Save HK$179,846 HKD (75%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$240,062 HKD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 LG768629057 or 768629057. Listed at 14 retailers as of October 31, 2026, with prices from HK$60,216 to HK$240,062, a HK$179,846 spread on the same certified stone. Taylor and Hart lists it at HK$240,062. 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 angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768629057
Dimensions11.36 × 11.42 × 6.95 mm
L/W Ratio1.01
Girdle conditionFaceted
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
11.36 mm11.42 mm5.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768629057
Side View
Table 56.0%Crown 34.5°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 61.0%

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: Nov 1
Current: HK$138,191 HKD|Low: HK$60,216 HKD|High: HK$286,447 HKD|Avg: HK$135,582 HKD|+0.0%
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
November 1, 2026
Retailer 12HK$60,216 HKD
Retailer 3HK$68,956 HKD
Retailer 2HK$77,845 HKD
Retailer 13HK$81,445 HKD
Retailer 6HK$89,332 HKD
Retailer 11HK$123,358 HKD
Retailer 7HK$124,361 HKD
Retailer 5HK$129,165 HKD
Retailer 1HK$138,191 HKD
Retailer 9HK$151,251 HKD
Retailer 8HK$179,980 HKD
Retailer 4HK$204,477 HKD
Retailer 10HK$224,756 HKD
Taylor and HartHK$240,062 HKD

42 data points across 14 retailers

14 retailersHK$60,216 HKD to HK$240,062 HKD

A
Cheapest Retailer
-
HK$60,216 HKD
$7,675 USD
A
Retailer 2
-
HK$68,956 HKD
$8,789 USD
View
Retailer 3
-
HK$71,387 HKD
$9,099 USD
View
Price last confirmed 76 days ago
A
Retailer 4
-
HK$77,845 HKD
$9,922 USD
View
A
Retailer 5
-
HK$81,445 HKD
View
A
Retailer 6
-
HK$89,332 HKD
£8,965 GBP
View
A
Retailer 7
-
HK$123,358 HKD
$15,723 USD
View
A
Retailer 8
-
HK$124,361 HKD
€15,096 EUR
View
B+
Retailer 9
-
HK$138,191 HKD
£13,869 GBP
View
B+
Retailer 10
-
HK$151,251 HKD
ZAR 311,441 ZAR
View
B+
Retailer 11
-
HK$179,980 HKD
$22,940 USD
View
B+
Retailer 12
-
HK$204,477 HKD
$26,062 USD
View
B
Retailer 13
-
HK$224,756 HKD
$28,647 USD
View
Most Expensive
B
Taylor and Hart
BCB6Q9W · Oct 31
HK$240,062 HKD
$30,598 USD
View
13 more retailers have this diamond
Prices start from HK$60,216 HKDSave up to HK$179,846 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$60,216 HKD