Cushion|Lab Grown|IGI

1.88ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811638305

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

Certificate IGI LG811638305

Diamond specifications and retailer prices

From HK$5,406 HKD
$689 USD
As of October 31, 2026
Save HK$27,625 HKD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$48,879 HKD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.88ct lab-grown cushion diamond

This 1.88ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811638305 or 811638305. Listed at 19 retailers as of October 31, 2026, with a 511% 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

1.88
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638305
Dimensions7.11 × 7.01 × 4.60 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
7.11 mm7.01 mm1.88 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638305
Side View
Table 62.0%Crown 34.7°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
A+
Exceptional
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 31
Current: HK$33,030 HKD|Low: HK$5,406 HKD|High: HK$47,231 HKD|Avg: HK$17,414 HKD|-30.1%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 10HK$5,406 HKD
Retailer 9HK$5,908 HKD
Retailer 12HK$6,983 HKD
Retailer 16HK$9,187 HKD
Retailer 11HK$9,389 HKD
Retailer 2HK$10,042 HKD
Retailer 15HK$10,303 HKD
Retailer 17HK$12,616 HKD
Retailer 6HK$12,977 HKD
Retailer 5HK$17,457 HKD
Retailer 3HK$19,370 HKD
Retailer 13HK$20,469 HKD
Retailer 7HK$21,307 HKD
Retailer 14HK$26,166 HKD
Retailer 8HK$28,598 HKD
Retailer 4HK$30,033 HKD
Brilliant EarthHK$33,030 HKD

26 data points across 17 retailers

19 retailersHK$5,406 HKD to HK$33,030 HKD

A+
Cheapest Retailer
-
HK$5,406 HKD
$689 USD
Final sale: no returns
Retailer 2
-
HK$5,908 HKD
$753 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
HK$6,983 HKD
$890 USD
View
A
Retailer 4
-
HK$9,187 HKD
$1,171 USD
View
A
Retailer 5
-
HK$9,389 HKD
£942 GBP
View
A
Retailer 6
-
HK$10,042 HKD
€1,219 EUR
View
A
Retailer 7
-
HK$10,303 HKD
ZAR 21,214 ZAR
View
A
Retailer 8
-
HK$12,616 HKD
$1,608 USD
View
A
Retailer 9
-
HK$12,977 HKD
$1,654 USD
View
B+
Retailer 10
-
HK$17,457 HKD
£1,752 GBP
View
B+
Retailer 11
-
HK$18,367 HKD
$2,341 USD
View
B+
Retailer 12
-
HK$19,370 HKD
$2,469 USD
View
B+
Retailer 13
-
HK$20,469 HKD
$2,609 USD
View
B+
Retailer 14
-
HK$21,307 HKD
SGD 3,670 SGD
View
B
Retailer 15
-
HK$26,166 HKD
£2,626 GBP
View
Retailer 16
-
HK$28,598 HKD
$3,645 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
HK$30,033 HKD
$3,828 USD
View
B
Retailer 18
-
HK$33,030 HKD
$4,210 USD
View
Most Expensive
Brilliant Earth
20988015A · Sep 28
HK$48,879 HKD
$6,230 USD
View
Price last confirmed 33 days ago
18 more retailers have this diamond
Prices start from HK$5,406 HKDSave up to HK$27,625 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+
1.88ct Cushion
HK$5,406 HKD