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Radiant|Lab Grown|IGI

5.10ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG754561978

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

Certificate IGI LG754561978

Diamond specifications and retailer prices

From HK$61,730 HKD
$7,868 USD
As of October 30, 2026
Save HK$172,529 HKD (74%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$234,259 HKD 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754561978 or 754561978. Listed at 23 retailers as of October 30, 2026, with prices from HK$61,730 to HK$234,259, a HK$172,529 spread on the same certified stone. Taylor and Hart lists it at HK$234,259. 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
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754561978
Dimensions12.47 × 8.54 × 5.47 mm
L/W Ratio1.46
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
12.47 mm8.54 mm5.10 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754561978
Side View
Table 66.0%Crown 40.6°Girdle: Slightly ThickPavilion 34.7°Culet: NoneDepth 64.1%

Caratlytics Score

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A
Excellent
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 30
Current: HK$88,314 HKD|Low: HK$61,730 HKD|High: HK$234,259 HKD|Avg: HK$118,564 HKD|-15.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
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Retailer 7
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Retailer 11
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Retailer 21
Taylor and Hart
October 31, 2026
Retailer 18HK$61,730 HKD
Retailer 16HK$63,589 HKD
Retailer 8HK$69,136 HKD
Retailer 3HK$71,600 HKD
Retailer 12HK$71,788 HKD
Retailer 20HK$73,918 HKD
Retailer 9HK$75,625 HKD
Retailer 15HK$79,650 HKD
Retailer 6HK$80,528 HKD
Retailer 21HK$81,729 HKD
Retailer 7HK$83,949 HKD
Retailer 1HK$88,314 HKD
Retailer 14HK$97,538 HKD
Retailer 4HK$102,590 HKD
Retailer 17HK$130,976 HKD
Retailer 5HK$133,638 HKD
Retailer 10HK$139,947 HKD
Retailer 2HK$145,478 HKD
Retailer 11HK$175,103 HKD
Retailer 13HK$188,822 HKD
Retailer 19HK$199,376 HKD
Taylor and HartHK$234,259 HKD

30 data points across 22 retailers

23 retailersHK$61,730 HKD to HK$234,259 HKD

A
Cheapest Retailer
-
HK$61,730 HKD
$7,868 USD
A
Retailer 2
-
HK$63,589 HKD
$8,105 USD
View
A
Retailer 3
-
HK$69,136 HKD
$8,812 USD
View
Final sale: no returns
A
Retailer 4
-
HK$71,600 HKD
$9,126 USD
View
A
Retailer 5
-
HK$71,788 HKD
$9,150 USD
View
A
Retailer 6
-
HK$73,918 HKD
£7,419 GBP
View
A
Retailer 7
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HK$75,625 HKD
$9,639 USD
View
A
Retailer 8
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HK$79,650 HKD
$10,152 USD
View
A
Retailer 9
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HK$80,528 HKD
$10,264 USD
View
A
Retailer 10
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HK$81,729 HKD
$10,417 USD
View
A
Retailer 11
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HK$83,949 HKD
$10,700 USD
View
Retailer 12
-
HK$84,349 HKD
$10,751 USD
View
Price last confirmed 14 days ago
A
Retailer 13
-
HK$88,314 HKD
£8,863 GBP
View
A
Retailer 14
-
HK$97,538 HKD
$12,432 USD
View
A
Retailer 15
-
HK$102,590 HKD
£10,296 GBP
View
A
Retailer 16
-
HK$130,976 HKD
$16,694 USD
View
A
Retailer 17
-
HK$133,638 HKD
£13,412 GBP
View
Retailer 18
-
HK$139,947 HKD
€16,988 EUR
View
Price last confirmed 7 days ago
A
Retailer 19
-
HK$145,478 HKD
ZAR 299,555 ZAR
View
Retailer 20
-
HK$175,103 HKD
A$34,336 AUD
View
Price last confirmed 8 days ago
Retailer 21
-
HK$188,822 HKD
A$37,026 AUD
View
Price last confirmed 22 days ago
B+
Retailer 22
-
HK$199,376 HKD
$25,412 USD
View
Most Expensive
B
Taylor and Hart
AC4DQ7Q · Oct 30
HK$234,259 HKD
$29,858 USD
View
22 more retailers have this diamond
Prices start from HK$61,730 HKDSave up to HK$172,529 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
5.10ct Radiant
HK$61,730 HKD