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Cushion|Lab Grown|IGI

1.89ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG816679704

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816679704

Diamond specifications and retailer prices

From HK$5,311 HKD
$677 USD
As of October 28, 2026
Save HK$17,518 HKD (77%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$30,910 HKD at Brilliant Earth · As of September 23, 2026
View at Brilliant Earth

About this 1.89ct lab-grown cushion diamond

This 1.89ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816679704 or 816679704. Listed at 6 retailers as of October 28, 2026, with a 330% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.2°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816679704
Dimensions8.81 × 6.30 × 4.07 mm
L/W Ratio1.40
Girdle conditionFaceted
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
8.81 mm6.30 mm1.89 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816679704
Side View
Table 59.0%Crown 27.2°Girdle: MED-THKPavilion 32.1°Culet: NoneDepth 64.6%

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 28
Current: HK$30,910 HKD|Low: HK$5,311 HKD|High: HK$30,910 HKD|Avg: HK$14,125 HKD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 4HK$5,311 HKD
Retailer 3HK$5,421 HKD
Retailer 5HK$9,163 HKD
Retailer 2HK$13,281 HKD
Retailer 6HK$22,829 HKD
Brilliant EarthHK$30,910 HKD

23 data points across 6 retailers

6 retailersHK$5,311 HKD to HK$22,829 HKD

A
Cheapest Retailer
-
HK$5,311 HKD
$677 USD
A
Retailer 2
-
HK$5,421 HKD
$691 USD
View
A
Retailer 3
-
HK$9,163 HKD
$1,168 USD
View
A
Retailer 4
-
HK$13,281 HKD
£1,333 GBP
View
B
Retailer 5
-
HK$22,829 HKD
$2,910 USD
View
Most Expensive
B
Brilliant Earth
20575036A · Sep 23
HK$30,910 HKD
$3,940 USD
View
Price last confirmed 35 days ago
5 more retailers have this diamond
Prices start from HK$5,311 HKDSave up to HK$17,518 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
1.89ct Cushion
HK$5,311 HKD