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Radiant|Lab Grown|IGI

1.21ct D VVS1 Radiant Lab Grown Diamond

EX • D/VVS1 • IGI LG731566581

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

Certificate IGI LG731566581

Diamond specifications and retailer prices

From HK$1,577 HKD
As of November 4, 2026
Save HK$8,073 HKD (84%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: HK$9,650 HKD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG731566581 or 731566581. Listed at 29 retailers as of November 4, 2026, with prices from HK$1,577 to HK$9,650, a HK$8,073 spread on the same certified stone. Brilliant Earth lists it at HK$9,650. 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
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.5°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731566581
Dimensions5.18 × 5.18 × 3.41 mm
L/W Ratio1.00
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
5.18 mm5.18 mm1.21 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731566581
Side View
Table 64.0%Crown 43.5°Girdle: Slightly ThickPavilion 34.2°Culet: NoneDepth 65.8%

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: Nov 4
Current: HK$9,650 HKD|Low: HK$1,577 HKD|High: HK$10,827 HKD|Avg: HK$5,213 HKD|-10.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 12HK$1,577 HKD
Retailer 6HK$1,757 HKD
Retailer 3HK$2,762 HKD
Retailer 9HK$3,319 HKD
Retailer 8HK$3,366 HKD
Retailer 2HK$3,546 HKD
Retailer 7HK$4,762 HKD
Retailer 11HK$6,300 HKD
Retailer 4HK$7,344 HKD
Retailer 10HK$8,395 HKD
Retailer 5HK$9,101 HKD
Brilliant EarthHK$9,650 HKD

43 data points across 12 retailers

29 retailersHK$1,577 HKD to HK$9,650 HKD

A
Cheapest Retailer
-
HK$1,577 HKD
Retailer 2
-
HK$1,577 HKD
View
Price last confirmed 28 days ago
Retailer 3
-
HK$1,577 HKD
View
Price last confirmed 36 days ago
A
Retailer 4
-
HK$1,757 HKD
View
Final sale: no returns
Retailer 5
-
HK$1,828 HKD
View
Price last confirmed 39 days ago
Retailer 6
-
HK$1,930 HKD
View
Price last confirmed 37 days ago
Retailer 7
-
HK$1,954 HKD
View
Price last confirmed 33 days ago
A
Retailer 8
-
HK$2,307 HKD
View
B+
Retailer 9
-
HK$2,762 HKD
View
A
Retailer 10
-
HK$3,319 HKD
View
A
Retailer 11
-
HK$3,366 HKD
View
Retailer 12
-
HK$3,491 HKD
View
Price last confirmed 21 days ago
A
Retailer 13
-
HK$3,546 HKD
View
A
Retailer 14
-
HK$3,868 HKD
View
A
Retailer 15
-
HK$4,174 HKD
View
B+
Retailer 16
-
HK$4,551 HKD
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B+
Retailer 17
-
HK$4,762 HKD
View
B+
Retailer 18
-
HK$6,284 HKD
View
Retailer 19
-
HK$6,284 HKD
View
Price last confirmed 36 days ago
Retailer 20
-
HK$6,284 HKD
View
Price last confirmed 26 days ago
B+
Retailer 21
-
HK$6,300 HKD
View
B+
Retailer 22
-
HK$6,653 HKD
View
B+
Retailer 23
-
HK$6,700 HKD
View
B
Retailer 24
-
HK$7,006 HKD
View
Retailer 25
-
HK$7,344 HKD
View
Price last confirmed 31 days ago
Retailer 26
-
HK$8,395 HKD
View
Price last confirmed 18 days ago
B
Retailer 27
-
HK$9,101 HKD
View
B
Retailer 28
-
HK$9,384 HKD
View
Most Expensive
B
Brilliant Earth
15998864A · Nov 4
HK$9,650 HKD
$1,230 USD
View
28 more retailers have this diamond
Prices start from HK$1,577 HKDSave up to HK$8,073 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$1,577 HKD