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Round|Lab Grown|IGI

1.21ct D VS1 Round Lab Grown Diamond

ID • D/VS1 • IGI LG778645955

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778645955

Diamond specifications and retailer prices

From HK$1,467 HKD
As of November 5, 2026
Save HK$7,563 HKD (84%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$16,739 HKD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round 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 LG778645955 or 778645955. Listed at 23 retailers as of November 4, 2026, with a 516% 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 angle33.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778645955
Dimensions6.91 × 6.94 × 4.15 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.91 mm6.94 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778645955
Side View
Table 58.0%Crown 33.9°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
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 5
Current: HK$3,256 HKD|Low: HK$1,404 HKD|High: HK$8,606 HKD|Avg: HK$4,094 HKD|+3.5%
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
November 5, 2026
Retailer 13HK$1,467 HKD
Retailer 2HK$1,820 HKD
Retailer 3HK$2,448 HKD
Retailer 6HK$3,075 HKD
Retailer 11HK$3,138 HKD
Retailer 1HK$3,256 HKD
Retailer 9HK$3,358 HKD
Retailer 7HK$3,750 HKD
Retailer 10HK$4,433 HKD
Retailer 5HK$5,845 HKD
Retailer 8HK$5,868 HKD
Retailer 4HK$6,096 HKD
Retailer 12HK$8,496 HKD

41 data points across 13 retailers

23 retailersHK$1,467 HKD to HK$9,030 HKD

A
Cheapest Retailer
-
HK$1,467 HKD
A
Retailer 2
-
HK$1,640 HKD
View
Final sale: no returns
A
Retailer 3
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HK$1,702 HKD
View
A
Retailer 4
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HK$1,820 HKD
View
Retailer 5
-
HK$1,820 HKD
View
Price last confirmed 11 days ago
A
Retailer 6
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HK$2,008 HKD
View
B+
Retailer 7
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HK$2,448 HKD
View
A
Retailer 8
-
HK$3,075 HKD
View
A
Retailer 9
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HK$3,083 HKD
View
A
Retailer 10
-
HK$3,138 HKD
View
B+
Retailer 11
-
HK$3,256 HKD
View
B+
Retailer 12
-
HK$3,358 HKD
View
B+
Retailer 13
-
HK$3,750 HKD
View
B+
Retailer 14
-
HK$4,433 HKD
View
B+
Retailer 15
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HK$4,699 HKD
View
B
Retailer 16
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HK$5,845 HKD
View
B
Retailer 17
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HK$5,868 HKD
View
B
Retailer 18
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HK$5,923 HKD
View
B
Retailer 19
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HK$6,096 HKD
View
B
Retailer 20
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HK$6,268 HKD
View
B
Retailer 21
-
HK$8,496 HKD
View
B
Retailer 22
-
HK$9,030 HKD
View
Most Expensive
Queensmith
LG778645955 · Oct 27
HK$16,739 HKD
£1,680 GBP
View
Price last confirmed 9 days ago
22 more retailers have this diamond
Prices start from HK$1,467 HKDSave up to HK$7,563 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 Round
HK$1,467 HKD