CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG778688204

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778688204

Diamond specifications and retailer prices

From HK$1,779 HKD
As of November 6, 2026
Save HK$5,902 HKD (77%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$9,366 HKD at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778688204 or 778688204. Listed at 18 retailers as of November 5, 2026, with a 332% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778688204
Dimensions7.29 × 7.34 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.29 mm7.34 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778688204
Side View
Table 58.0%Crown 35.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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 6
Current: HK$9,366 HKD|Low: HK$1,552 HKD|High: HK$10,032 HKD|Avg: HK$4,605 HKD|+14.3%
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
Retailer 16
Retailer 17
November 6, 2026
Retailer 6HK$1,615 HKD
Retailer 14HK$1,779 HKD
Retailer 9HK$1,873 HKD
Retailer 5HK$2,202 HKD
Retailer 2HK$3,221 HKD
Retailer 15HK$3,425 HKD
Retailer 16HK$3,448 HKD
Retailer 11HK$3,566 HKD
Retailer 10HK$3,613 HKD
Retailer 8HK$4,005 HKD
Retailer 17HK$4,264 HKD
Retailer 3HK$6,035 HKD
Retailer 12HK$6,380 HKD
Retailer 4HK$6,419 HKD
Retailer 7HK$6,435 HKD
Retailer 13HK$7,681 HKD
MOH LondonHK$9,366 HKD

43 data points across 17 retailers

18 retailersHK$1,779 HKD to HK$7,681 HKD

Retailer 1
-
HK$1,615 HKD
Price last confirmed 12 days ago
A
Retailer 2
-
HK$1,779 HKD
View
Final sale: no returns
Retailer 3
-
HK$1,873 HKD
View
Price last confirmed 11 days ago
Retailer 4
-
HK$1,999 HKD
View
Price last confirmed 15 days ago
A
Retailer 5
-
HK$2,202 HKD
View
A
Retailer 6
-
HK$3,221 HKD
View
B+
Retailer 7
-
HK$3,425 HKD
View
A
Retailer 8
-
HK$3,448 HKD
View
A
Retailer 9
-
HK$3,566 HKD
View
A
Retailer 10
-
HK$3,613 HKD
View
Retailer 11
-
HK$4,005 HKD
View
Price last confirmed 12 days ago
A
Retailer 12
-
HK$4,264 HKD
View
Retailer 13
-
HK$6,035 HKD
View
Price last confirmed 10 days ago
B
Retailer 14
-
HK$6,380 HKD
View
B+
Retailer 15
-
HK$6,419 HKD
View
Retailer 16
-
HK$6,435 HKD
View
Price last confirmed 14 days ago
B
Retailer 17
-
HK$7,681 HKD
View
Most Expensive
MOH London
LG778688204 · Oct 26
HK$9,366 HKD
£941 GBP
View
Price last confirmed 11 days ago
17 more retailers have this diamond
Prices start from HK$1,779 HKDSave up to HK$5,902 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
1.51ct Round
HK$1,779 HKD