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Cushion|Lab Grown|IGI

1.77ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG731533573

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG731533573

Diamond specifications and retailer prices

From HK$3,358 HKD
$428 USD
As of October 30, 2026
Save HK$23,396 HKD (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$29,421 HKD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.77ct lab-grown cushion diamond

This 1.77ct 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 LG731533573 or 731533573. Listed at 22 retailers as of October 30, 2026, with a 697% 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

1.77
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.8°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731533573
Dimensions8.25 × 6.61 × 4.38 mm
L/W Ratio1.25
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
8.25 mm6.61 mm1.77 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731533573
Side View
Table 60.0%Crown 29.8°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 66.3%

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: Oct 30
Current: HK$26,048 HKD|Low: HK$3,358 HKD|High: HK$30,363 HKD|Avg: HK$11,950 HKD|-11.5%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 6HK$3,358 HKD
Retailer 12HK$4,358 HKD
Retailer 5HK$5,122 HKD
Retailer 2HK$5,359 HKD
Retailer 15HK$5,374 HKD
Retailer 18HK$5,735 HKD
Retailer 13HK$6,792 HKD
Retailer 17HK$7,081 HKD
Retailer 14HK$7,447 HKD
Retailer 4HK$8,418 HKD
Retailer 16HK$9,598 HKD
Retailer 10HK$12,076 HKD
Retailer 11HK$13,507 HKD
Retailer 7HK$13,901 HKD
Retailer 3HK$13,973 HKD
Retailer 9HK$15,215 HKD
Retailer 8HK$22,556 HKD
Brilliant EarthHK$26,048 HKD
Retailer 19HK$26,754 HKD

28 data points across 19 retailers

22 retailersHK$3,358 HKD to HK$26,754 HKD

A
Cheapest Retailer
-
HK$3,358 HKD
$428 USD
Final sale: no returns
A
Retailer 2
-
HK$4,358 HKD
£437 GBP
View
A
Retailer 3
-
HK$5,122 HKD
View
A
Retailer 4
-
HK$5,359 HKD
$683 USD
View
A
Retailer 5
-
HK$5,374 HKD
$685 USD
View
A
Retailer 6
-
HK$5,735 HKD
$731 USD
View
A
Retailer 7
-
HK$6,792 HKD
£682 GBP
View
A
Retailer 8
-
HK$7,081 HKD
ZAR 14,581 ZAR
View
A
Retailer 9
-
HK$7,447 HKD
€904 EUR
View
A
Retailer 10
-
HK$8,418 HKD
$1,073 USD
View
A
Retailer 11
-
HK$9,598 HKD
A$1,882 AUD
View
Retailer 12
-
HK$12,076 HKD
£1,212 GBP
View
Price last confirmed 10 days ago
B+
Retailer 13
-
HK$13,507 HKD
$1,722 USD
View
B+
Retailer 14
-
HK$13,901 HKD
$1,772 USD
View
B+
Retailer 15
-
HK$13,973 HKD
$1,781 USD
View
Retailer 16
-
HK$15,215 HKD
£1,527 GBP
View
Price last confirmed 11 days ago
Retailer 17
-
HK$21,536 HKD
$2,745 USD
View
Price last confirmed 27 days ago
Retailer 18
-
HK$22,556 HKD
$2,875 USD
View
Price last confirmed 11 days ago
B
Retailer 19
-
HK$25,109 HKD
£2,520 GBP
View
B
Retailer 20
-
HK$26,048 HKD
$3,320 USD
View
B
Retailer 21
-
HK$26,754 HKD
$3,410 USD
View
Most Expensive
Brilliant Earth
15616671A · Oct 24
HK$29,421 HKD
$3,750 USD
View
Price last confirmed 7 days ago
21 more retailers have this diamond
Prices start from HK$3,358 HKDSave up to HK$23,396 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
1.77ct Cushion
HK$3,358 HKD