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Cushion|Lab Grown|IGI

1.89ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG718507117

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG718507117

Diamond specifications and retailer prices

From HK$3,907 HKD
$498 USD
As of October 30, 2026
Save HK$26,063 HKD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$29,971 HKD at Brilliant Earth · As of October 31, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG718507117 or 718507117. Listed at 13 retailers as of October 30, 2026, with prices from HK$3,907 to HK$29,971, a HK$26,063 spread on the same certified stone. Brilliant Earth lists it at HK$29,971. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG718507117
Dimensions8.33 × 6.50 × 4.57 mm
L/W Ratio1.28
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
8.33 mm6.50 mm1.89 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG718507117
Side View
Table 58.0%Crown 34°Girdle: STK-THKPavilion 42.1°Culet: NoneDepth 70.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$29,971 HKD|Low: HK$3,907 HKD|High: HK$44,171 HKD|Avg: HK$15,376 HKD|-32.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 5HK$3,907 HKD
Retailer 9HK$5,257 HKD
Retailer 3HK$5,688 HKD
Retailer 11HK$6,237 HKD
Retailer 6HK$6,796 HKD
Retailer 4HK$9,666 HKD
Retailer 8HK$10,133 HKD
Retailer 12HK$11,623 HKD
Retailer 2HK$15,982 HKD
Retailer 7HK$25,356 HKD
Retailer 13HK$25,695 HKD
Retailer 10HK$28,245 HKD
Brilliant EarthHK$29,971 HKD

34 data points across 13 retailers

13 retailersHK$3,907 HKD to HK$29,971 HKD

A
Cheapest Retailer
-
HK$3,907 HKD
$498 USD
Final sale: no returns
A
Retailer 2
-
HK$5,257 HKD
$670 USD
View
A
Retailer 3
-
HK$5,688 HKD
$725 USD
View
A
Retailer 4
-
HK$6,237 HKD
$795 USD
View
A
Retailer 5
-
HK$6,796 HKD
€825 EUR
View
A
Retailer 6
-
HK$9,666 HKD
$1,232 USD
View
A
Retailer 7
-
HK$10,133 HKD
A$1,987 AUD
View
A
Retailer 8
-
HK$11,623 HKD
$1,481 USD
View
B+
Retailer 9
-
HK$15,982 HKD
£1,604 GBP
View
B+
Retailer 10
-
HK$25,356 HKD
A$4,972 AUD
View
Retailer 11
-
HK$25,695 HKD
$3,275 USD
View
Price last confirmed 11 days ago
B
Retailer 12
-
HK$28,245 HKD
$3,600 USD
View
Most Expensive
B
Brilliant Earth
14895653Y · Oct 31
HK$29,971 HKD
$3,820 USD
View
12 more retailers have this diamond
Prices start from HK$3,907 HKDSave up to HK$26,063 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$3,907 HKD