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Cushion|Lab Grown|IGI

1.78ct I VS1 Cushion Lab Grown Diamond

EX • I/VS1 • IGI LG12351907

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG12351907

Diamond specifications and retailer prices

From HK$4,880 HKD
$622 USD
As of November 1, 2026
Save HK$15,127 HKD (76%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$20,007 HKD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.78ct lab-grown cushion diamond

This 1.78ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG12351907 or 12351907. Listed at 5 retailers as of October 31, 2026, with prices from HK$4,880 to HK$20,007, a HK$15,127 spread on the same certified stone. Do Amore Diamonds lists it at HK$20,007. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12351907
Dimensions7.99 × 6.61 × 4.45 mm
L/W Ratio1.21
Culet sizePointed
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
7.99 mm6.61 mm1.78 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG12351907
Side View
Table 63.0%Crown 37°Girdle: THN-UNDPavilion 39.1°Culet: NoneDepth 67.3%

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 1
Current: HK$20,007 HKD|Low: HK$4,197 HKD|High: HK$21,419 HKD|Avg: HK$10,902 HKD|-6.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4HK$4,880 HKD
Retailer 3HK$4,904 HKD
Retailer 5HK$5,108 HKD
Retailer 2HK$13,242 HKD
Do Amore DiamondsHK$20,007 HKD

23 data points across 5 retailers

5 retailersHK$4,880 HKD to HK$20,007 HKD

A
Cheapest Retailer
-
HK$4,880 HKD
$622 USD
A
Retailer 2
-
HK$4,904 HKD
$625 USD
View
A
Retailer 3
-
HK$5,108 HKD
$651 USD
View
B
Retailer 4
-
HK$13,242 HKD
£1,329 GBP
View
Most Expensive
B
Do Amore Diamonds
7-1428655 · Oct 31
HK$20,007 HKD
$2,550 USD
View
4 more retailers have this diamond
Prices start from HK$4,880 HKDSave up to HK$15,127 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 Cushion
HK$4,880 HKD