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Radiant|Lab Grown|IGI

1.51ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG508151920

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

Certificate IGI LG508151920

Diamond specifications and retailer prices

From HK$3,311 HKD
As of November 3, 2026
Save HK$16,704 HKD (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$31,226 HKD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508151920 or 508151920. Listed at 23 retailers as of November 3, 2026, with a 505% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508151920
Dimensions7.76 × 5.70 × 3.90 mm
L/W Ratio1.36
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.76 mm5.70 mm1.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508151920
Side View
Table 67.0%Crown 44.1°Girdle: STK-THKPavilion 37°Culet: NoneDepth 68.4%

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: Nov 3
Current: HK$31,226 HKD|Low: HK$3,374 HKD|High: HK$31,226 HKD|Avg: HK$10,290 HKD
Do Amore Diamonds
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
November 5, 2026
Retailer 5HK$3,515 HKD
Retailer 9HK$3,931 HKD
Retailer 17HK$3,939 HKD
Retailer 3HK$4,354 HKD
Retailer 4HK$4,354 HKD
Retailer 11HK$5,602 HKD
Retailer 8HK$6,834 HKD
Retailer 14HK$7,767 HKD
Retailer 10HK$7,924 HKD
Retailer 12HK$8,293 HKD
Retailer 16HK$11,714 HKD
Retailer 7HK$12,647 HKD
Retailer 15HK$13,102 HKD
Retailer 6HK$16,304 HKD
Retailer 13HK$18,139 HKD
Retailer 2HK$20,015 HKD
Do Amore DiamondsHK$31,226 HKD

40 data points across 17 retailers

23 retailersHK$3,311 HKD to HK$20,015 HKD

A
Cheapest Retailer
-
HK$3,311 HKD
A
Retailer 2
-
HK$3,515 HKD
View
A
Retailer 3
-
HK$3,931 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$3,939 HKD
View
Retailer 5
-
HK$4,354 HKD
View
Price last confirmed 20 days ago
A
Retailer 6
-
HK$4,354 HKD
View
B+
Retailer 7
-
HK$5,492 HKD
View
B+
Retailer 8
-
HK$5,602 HKD
View
B+
Retailer 9
-
HK$6,222 HKD
View
B+
Retailer 10
-
HK$6,834 HKD
View
Retailer 11
-
HK$7,767 HKD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
HK$7,924 HKD
View
B+
Retailer 13
-
HK$8,293 HKD
View
B
Retailer 14
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HK$11,651 HKD
View
B
Retailer 15
-
HK$11,714 HKD
View
B
Retailer 16
-
HK$12,647 HKD
View
B
Retailer 17
-
HK$13,102 HKD
View
B
Retailer 18
-
HK$13,989 HKD
View
B
Retailer 19
-
HK$16,304 HKD
View
B
Retailer 20
-
HK$16,586 HKD
View
B
Retailer 21
-
HK$18,139 HKD
View
B
Retailer 22
-
HK$20,015 HKD
View
Most Expensive
Do Amore Diamonds
27-9D9268BDC · Nov 4
HK$31,226 HKD
$3,980 USD
View
Price under review
22 more retailers have this diamond
Prices start from HK$3,311 HKDSave up to HK$16,704 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
1.51ct Radiant
HK$3,311 HKD