Radiant|Lab Grown|IGI

1.21ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG620456864

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

Certificate IGI LG620456864

Diamond specifications and retailer prices

From HK$1,812 HKD
$231 USD
As of November 1, 2026
Save HK$8,308 HKD (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$18,517 HKD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG620456864 or 620456864. Listed at 19 retailers as of November 1, 2026, with a 458% 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

1.21
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620456864
Dimensions7.56 × 5.22 × 3.50 mm
L/W Ratio1.45
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
7.56 mm5.22 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620456864
Side View
Table 66.0%Crown 46.1°Girdle: MediumPavilion 35.9°Culet: NoneDepth 67.0%

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$4,681 HKD|Low: HK$1,734 HKD|High: HK$10,044 HKD|Avg: HK$4,439 HKD|+3.7%
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
November 1, 2026
Retailer 14HK$1,812 HKD
Retailer 6HK$2,024 HKD
Retailer 4HK$2,095 HKD
Retailer 2HK$2,244 HKD
Retailer 15HK$2,244 HKD
Retailer 7HK$2,887 HKD
Retailer 13HK$3,005 HKD
Retailer 9HK$4,253 HKD
Retailer 1HK$4,681 HKD
Retailer 5HK$4,716 HKD
Retailer 10HK$6,003 HKD
Retailer 8HK$6,023 HKD
Retailer 12HK$7,234 HKD
Retailer 3HK$7,956 HKD
Retailer 11HK$9,975 HKD

41 data points across 15 retailers

19 retailersHK$1,812 HKD to HK$10,121 HKD

A
Cheapest Retailer
-
HK$1,812 HKD
$231 USD
A
Retailer 2
-
HK$2,024 HKD
$258 USD
View
Final sale: no returns
A
Retailer 3
-
HK$2,095 HKD
$267 USD
View
Retailer 4
-
HK$2,244 HKD
$286 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
HK$2,244 HKD
$286 USD
View
A
Retailer 6
-
HK$2,887 HKD
$368 USD
View
A
Retailer 7
-
HK$3,005 HKD
$383 USD
View
A
Retailer 8
-
HK$4,253 HKD
ZAR 8,757 ZAR
View
B+
Retailer 9
-
HK$4,681 HKD
£470 GBP
View
B+
Retailer 10
-
HK$4,716 HKD
$601 USD
View
B+
Retailer 11
-
HK$6,003 HKD
A$1,177 AUD
View
B+
Retailer 12
-
HK$6,023 HKD
A$1,181 AUD
View
B
Retailer 13
-
HK$7,234 HKD
$922 USD
View
B
Retailer 14
-
HK$7,956 HKD
$1,014 USD
View
B
Retailer 15
-
HK$9,296 HKD
$1,185 USD
View
Retailer 16
-
HK$9,975 HKD
£1,001 GBP
View
Price last confirmed 12 days ago
B
Retailer 17
-
HK$10,121 HKD
$1,290 USD
View
Retailer 18
-
HK$17,340 HKD
$2,210 USD
View
Price under review
Most Expensive
Do Amore Diamonds
23-620456864 · Oct 31
HK$18,517 HKD
$2,360 USD
View
Price under review
18 more retailers have this diamond
Prices start from HK$1,812 HKDSave up to HK$8,308 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
1.21ct Radiant
HK$1,812 HKD