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Round|Lab Grown|IGI

1.21ct I SI1 Round Lab Grown Diamond

VG • I/SI1 • IGI LG843641795

Shape and cutting style on the report: Round brilliant

Certificate IGI LG843641795

Diamond specifications and retailer prices

From HK$2,048 HKD
As of October 30, 2026
Save HK$3,350 HKD (62%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$8,768 HKD at MOH London · As of October 25, 2026
View at MOH London

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG843641795 or 843641795. Listed at 14 retailers as of October 30, 2026, with a 164% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843641795
Dimensions6.90 × 6.87 × 4.11 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.90 mm6.87 mm1.21 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG843641795
Side View
Table 59.0%Crown 35.5°Girdle: MediumPavilion 39.8°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$8,768 HKD|Low: HK$1,506 HKD|High: HK$8,983 HKD|Avg: HK$4,165 HKD|-0.3%
MOH London
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 6, 2026
Retailer 6HK$1,765 HKD
Retailer 3HK$1,977 HKD
Retailer 12HK$2,048 HKD
Retailer 15HK$2,189 HKD
Retailer 8HK$2,667 HKD
Retailer 14HK$2,965 HKD
Retailer 9HK$3,295 HKD
Retailer 2HK$3,593 HKD
Retailer 13HK$4,236 HKD
Retailer 11HK$5,194 HKD
Retailer 5HK$5,217 HKD
Retailer 10HK$5,397 HKD
Retailer 7HK$6,017 HKD
Retailer 4HK$7,453 HKD
MOH LondonHK$8,768 HKD

14 data points across 15 retailers

14 retailersHK$2,048 HKD to HK$5,397 HKD

Retailer 1
-
HK$1,765 HKD
Price last confirmed 11 days ago
B+
Retailer 2
-
HK$2,048 HKD
View
Retailer 3
-
HK$2,189 HKD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
HK$2,667 HKD
View
B+
Retailer 5
-
HK$2,965 HKD
View
B+
Retailer 6
-
HK$3,295 HKD
View
B+
Retailer 7
-
HK$3,593 HKD
View
B+
Retailer 8
-
HK$4,236 HKD
View
B+
Retailer 9
-
HK$5,194 HKD
View
Retailer 10
-
HK$5,217 HKD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
HK$5,397 HKD
View
Retailer 12
-
HK$6,017 HKD
View
Price last confirmed 13 days ago
Retailer 13
-
HK$7,453 HKD
View
Price last confirmed 10 days ago
Most Expensive
MOH London
LG843641795 · Oct 25
HK$8,768 HKD
£880 GBP
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from HK$2,048 HKDSave up to HK$3,350 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.

B+
1.21ct Round
HK$2,048 HKD