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1.78ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG470149591

Shape and cutting style on the report: Round brilliant

Certificate IGI LG470149591

Diamond specifications and retailer prices

From HK$2,644 HKD
$337 USD
As of October 29, 2026
Save HK$11,525 HKD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$14,169 HKD at MOH London · As of October 25, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG470149591 or 470149591. Listed at 15 retailers as of October 25, 2026, with prices from HK$2,644 to HK$14,169, a HK$11,525 spread on the same certified stone. MOH London lists it at HK$14,169. 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

1.78
Carat
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG470149591
Dimensions7.77 × 7.82 × 4.80 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.77 mm7.82 mm1.78 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG470149591
Side View
Table 57.0%Crown 35.2°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.6%

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: Oct 29
Current: HK$14,169 HKD|Low: HK$2,644 HKD|High: HK$14,219 HKD|Avg: HK$6,884 HKD|-0.4%
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
October 30, 2026
Retailer 14HK$2,644 HKD
Retailer 11HK$3,068 HKD
Retailer 3HK$3,280 HKD
Retailer 10HK$3,280 HKD
Retailer 8HK$3,436 HKD
Retailer 9HK$4,247 HKD
Retailer 12HK$5,963 HKD
Retailer 6HK$6,083 HKD
Retailer 4HK$6,394 HKD
Retailer 7HK$6,724 HKD
Retailer 2HK$7,375 HKD
Retailer 13HK$9,627 HKD
Retailer 5HK$10,615 HKD
Retailer 15HK$11,643 HKD
MOH LondonHK$14,169 HKD

14 data points across 15 retailers

15 retailersHK$2,644 HKD to HK$14,169 HKD

A
Cheapest Retailer
-
HK$2,644 HKD
$337 USD
A
Retailer 2
-
HK$3,068 HKD
$391 USD
View
A
Retailer 3
-
HK$3,280 HKD
$418 USD
View
A
Retailer 4
-
HK$3,280 HKD
$418 USD
View
B+
Retailer 5
-
HK$3,436 HKD
$438 USD
View
A
Retailer 6
-
HK$4,247 HKD
£426 GBP
View
A
Retailer 7
-
HK$5,963 HKD
$760 USD
View
A
Retailer 8
-
HK$6,083 HKD
$775 USD
View
A
Retailer 9
-
HK$6,394 HKD
$815 USD
View
A
Retailer 10
-
HK$6,724 HKD
$857 USD
View
A
Retailer 11
-
HK$7,375 HKD
$940 USD
View
B+
Retailer 12
-
HK$9,627 HKD
$1,227 USD
View
B+
Retailer 13
-
HK$10,615 HKD
$1,353 USD
View
B+
Retailer 14
-
HK$11,643 HKD
$1,484 USD
View
Most Expensive
B+
MOH London
LG470149591 · Oct 25
HK$14,169 HKD
£1,422 GBP
View
14 more retailers have this diamond
Prices start from HK$2,644 HKDSave up to HK$11,525 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
1.78ct Round
HK$2,644 HKD