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Radiant|Lab Grown|IGI

1.21ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG512237789

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

Certificate IGI LG512237789

Diamond specifications and retailer prices

From HK$1,671 HKD
As of November 4, 2026
Save HK$12,687 HKD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$14,358 HKD at Do Amore Diamonds · As of November 2, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG512237789 or 512237789. Listed at 19 retailers as of November 2, 2026, with prices from HK$1,671 to HK$14,358, a HK$12,687 spread on the same certified stone. Do Amore Diamonds lists it at HK$14,358. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512237789
Dimensions7.90 × 5.18 × 3.55 mm
L/W Ratio1.53
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
7.90 mm5.18 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512237789
Side View
Table 65.5%Crown 38.5°Girdle: MediumPavilion 37°Culet: NoneDepth 68.5%

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 4
Current: HK$14,358 HKD|Low: HK$1,436 HKD|High: HK$14,985 HKD|Avg: HK$5,513 HKD|+15.8%
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
November 5, 2026
Retailer 15HK$1,671 HKD
Retailer 5HK$1,938 HKD
Retailer 14HK$2,503 HKD
Retailer 8HK$2,558 HKD
Retailer 13HK$2,762 HKD
Retailer 11HK$3,538 HKD
Retailer 10HK$4,598 HKD
Retailer 9HK$5,006 HKD
Retailer 6HK$5,814 HKD
Retailer 4HK$6,873 HKD
Retailer 12HK$7,940 HKD
Retailer 2HK$8,183 HKD
Retailer 7HK$8,489 HKD
Retailer 3HK$8,528 HKD
Do Amore DiamondsHK$14,358 HKD

35 data points across 15 retailers

19 retailersHK$1,671 HKD to HK$14,358 HKD

Retailer 1
-
HK$1,287 HKD
Price last confirmed 17 days ago
Retailer 2
-
HK$1,499 HKD
View
Price last confirmed 22 days ago
Retailer 3
-
HK$1,601 HKD
View
Price last confirmed 20 days ago
A
Retailer 4
-
HK$1,671 HKD
View
Final sale: no returns
Retailer 5
-
HK$1,938 HKD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
HK$2,503 HKD
View
A
Retailer 7
-
HK$2,558 HKD
View
A
Retailer 8
-
HK$2,762 HKD
View
A
Retailer 9
-
HK$3,538 HKD
View
B+
Retailer 10
-
HK$4,598 HKD
View
B+
Retailer 11
-
HK$5,006 HKD
View
B+
Retailer 12
-
HK$5,280 HKD
View
B+
Retailer 13
-
HK$5,814 HKD
View
Retailer 14
-
HK$6,873 HKD
View
Price last confirmed 16 days ago
B
Retailer 15
-
HK$7,940 HKD
View
B
Retailer 16
-
HK$8,183 HKD
View
Retailer 17
-
HK$8,489 HKD
View
Price last confirmed 18 days ago
B
Retailer 18
-
HK$8,528 HKD
View
Most Expensive
B
Do Amore Diamonds
27-93AD91D01 · Nov 2
HK$14,358 HKD
$1,830 USD
View
18 more retailers have this diamond
Prices start from HK$1,671 HKDSave up to HK$12,687 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$1,671 HKD