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Cushion|Lab Grown|IGI

1.70ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG478107116

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG478107116

Diamond specifications and retailer prices

From HK$3,711 HKD
$473 USD
As of October 29, 2026
Save HK$15,302 HKD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$26,992 HKD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.7ct lab-grown cushion diamond

This 1.7ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478107116 or 478107116. Listed at 12 retailers as of October 27, 2026, with a 412% 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

1.70
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478107116
Dimensions7.27 × 6.63 × 4.54 mm
L/W Ratio1.10
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
7.27 mm6.63 mm1.70 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478107116
Side View
Table 62.0%Crown 35.2°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 68.5%

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$26,992 HKD|Low: HK$3,774 HKD|High: HK$26,992 HKD|Avg: HK$10,320 HKD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 8HK$3,774 HKD
Retailer 4HK$5,359 HKD
Retailer 10HK$5,744 HKD
Retailer 9HK$5,995 HKD
Retailer 2HK$6,844 HKD
Retailer 6HK$8,827 HKD
Retailer 7HK$15,144 HKD
Retailer 3HK$15,376 HKD
Retailer 5HK$19,014 HKD
Do Amore DiamondsHK$26,992 HKD

43 data points across 10 retailers

12 retailersHK$3,711 HKD to HK$19,014 HKD

A
Cheapest Retailer
-
HK$3,711 HKD
$473 USD
A
Retailer 2
-
HK$3,774 HKD
$481 USD
View
A
Retailer 3
-
HK$4,943 HKD
$630 USD
View
A
Retailer 4
-
HK$5,359 HKD
£538 GBP
View
B+
Retailer 5
-
HK$5,744 HKD
$732 USD
View
B+
Retailer 6
-
HK$5,995 HKD
$764 USD
View
B+
Retailer 7
-
HK$6,844 HKD
£687 GBP
View
Retailer 8
-
HK$8,827 HKD
$1,125 USD
View
Price last confirmed 8 days ago
B
Retailer 9
-
HK$15,144 HKD
$1,930 USD
View
B
Retailer 10
-
HK$15,376 HKD
£1,543 GBP
View
B
Retailer 11
-
HK$19,014 HKD
CA$3,366 CAD
View
Most Expensive
Do Amore Diamonds
27-531204799 · Oct 29
HK$26,992 HKD
$3,440 USD
View
Price under review
11 more retailers have this diamond
Prices start from HK$3,711 HKDSave up to HK$15,302 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
1.70ct Cushion
HK$3,711 HKD