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Cushion|Lab Grown|IGI

2.91ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG818613475

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG818613475

Diamond specifications and retailer prices

From HK$8,764 HKD
$1,117 USD
As of October 29, 2026
Save HK$54,002 HKD (86%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$62,766 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.91ct lab-grown cushion diamond

This 2.91ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818613475 or 818613475. Listed at 8 retailers as of October 29, 2026, with prices from HK$8,764 to HK$62,766, a HK$54,002 spread on the same certified stone. Brilliant Earth lists it at HK$62,766. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.91
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818613475
Dimensions8.12 × 8.03 × 5.35 mm
L/W Ratio1.01
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
8.12 mm8.03 mm2.91 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818613475
Side View
Table 61.0%Crown 35.7°Girdle: STK-THKPavilion 36.1°CuletDepth 66.6%

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 29
Current: HK$62,766 HKD|Low: HK$8,764 HKD|High: HK$85,754 HKD|Avg: HK$26,259 HKD|-26.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 4HK$8,764 HKD
Retailer 6HK$10,458 HKD
Retailer 5HK$13,808 HKD
Retailer 2HK$14,750 HKD
Retailer 7HK$17,695 HKD
Retailer 8HK$21,164 HKD
Retailer 3HK$25,428 HKD
Brilliant EarthHK$62,766 HKD

31 data points across 8 retailers

8 retailersHK$8,764 HKD to HK$62,766 HKD

A
Cheapest Retailer
-
HK$8,764 HKD
$1,117 USD
A
Retailer 2
-
HK$10,458 HKD
$1,333 USD
View
A
Retailer 3
-
HK$13,808 HKD
$1,760 USD
View
A
Retailer 4
-
HK$14,750 HKD
$1,880 USD
View
A
Retailer 5
-
HK$17,695 HKD
€2,148 EUR
View
Retailer 6
-
HK$21,164 HKD
A$4,150 AUD
View
Price last confirmed 10 days ago
A
Retailer 7
-
HK$25,428 HKD
£2,552 GBP
View
Most Expensive
B
Brilliant Earth
20880435A · Oct 30
HK$62,766 HKD
$8,000 USD
View
7 more retailers have this diamond
Prices start from HK$8,764 HKDSave up to HK$54,002 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
2.91ct Cushion
HK$8,764 HKD