Radiant|Lab Grown|IGI

4.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG787610099

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

Certificate IGI LG787610099

Diamond specifications and retailer prices

From HK$6,457 HKD
$823 USD
As of October 29, 2026
Save HK$33,085 HKD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$56,994 HKD at Queensmith · As of October 10, 2026
View at Queensmith

About this 4.51ct lab-grown radiant diamond

This 4.51ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG787610099 or 787610099. Listed at 20 retailers as of October 28, 2026, with a 512% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.51
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787610099
Dimensions12.01 × 7.91 × 5.25 mm
L/W Ratio1.52
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.01 mm7.91 mm4.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787610099
Side View
Table 64.0%Crown 37.5°Girdle: ThickPavilion 37.5°Culet: NoneDepth 66.4%

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: Oct 29
Current: HK$10,717 HKD|Low: HK$5,547 HKD|High: HK$40,013 HKD|Avg: HK$15,181 HKD|-12.9%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 29, 2026
Retailer 3HK$5,774 HKD
Retailer 16HK$6,457 HKD
Retailer 5HK$6,700 HKD
Retailer 7HK$6,700 HKD
Retailer 13HK$8,277 HKD
Retailer 4HK$9,509 HKD
Retailer 2HK$9,587 HKD
Retailer 1HK$10,717 HKD
Retailer 14HK$11,080 HKD
Retailer 12HK$14,256 HKD
Retailer 15HK$14,340 HKD
Retailer 18HK$16,500 HKD
Retailer 6HK$19,175 HKD
Retailer 9HK$21,723 HKD
Retailer 10HK$23,088 HKD
Retailer 8HK$23,874 HKD
Retailer 11HK$26,445 HKD
Retailer 17HK$39,542 HKD

37 data points across 18 retailers

20 retailersHK$6,457 HKD to HK$39,542 HKD

Retailer 1
-
HK$5,774 HKD
$736 USD
Price last confirmed 12 days ago
A
Retailer 2
-
HK$6,457 HKD
$823 USD
View
Final sale: no returns
Retailer 3
-
HK$6,700 HKD
$854 USD
View
Price last confirmed 14 days ago
Retailer 4
-
HK$6,700 HKD
$854 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
HK$8,277 HKD
$1,055 USD
View
A
Retailer 6
-
HK$9,509 HKD
$1,212 USD
View
B+
Retailer 7
-
HK$9,587 HKD
$1,222 USD
View
A
Retailer 8
-
HK$10,717 HKD
£1,076 GBP
View
Retailer 9
-
HK$11,080 HKD
€1,345 EUR
View
Price last confirmed 8 days ago
A
Retailer 10
-
HK$14,256 HKD
ZAR 29,354 ZAR
View
Retailer 11
-
HK$14,340 HKD
A$2,812 AUD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
HK$16,500 HKD
$2,103 USD
View
B+
Retailer 13
-
HK$19,175 HKD
$2,444 USD
View
B+
Retailer 14
-
HK$21,723 HKD
$2,769 USD
View
B+
Retailer 15
-
HK$22,643 HKD
$2,886 USD
View
B+
Retailer 16
-
HK$23,088 HKD
$2,943 USD
View
B+
Retailer 17
-
HK$23,874 HKD
$3,043 USD
View
B+
Retailer 18
-
HK$26,445 HKD
£2,654 GBP
View
B
Retailer 19
-
HK$39,542 HKD
$5,040 USD
View
Most Expensive
Queensmith
LG787610099 · Oct 10
HK$56,994 HKD
£5,720 GBP
View
Price last confirmed 21 days ago
19 more retailers have this diamond
Prices start from HK$6,457 HKDSave up to HK$33,085 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
4.51ct Radiant
HK$6,457 HKD