CaratHunter
Plans
Cushion|Lab Grown|IGI

1.09ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG500148132

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG500148132

Diamond specifications and retailer prices

From HK$9,619 HKD
$1,226 USD
As of November 1, 2026
1 retailer carries this diamond
Only listing: HK$9,619 HKD at B2C Jewels
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at B2C Jewels

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG500148132 or 500148132. Listed at a single retailer as of November 1, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500148132
Dimensions6.06 × 5.49 mm
L/W Ratio1.10
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
6.06 mm5.49 mm1.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG500148132
Side View
Table 66.5%Crown 36°Girdle: STK-VTKPavilion 34.3°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
C
Average
Compare with similar diamonds
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$9,619 HKD|Low: HK$9,148 HKD|High: HK$15,958 HKD|Avg: HK$11,739 HKD|-39.7%
September 23, 2026
B2C JewelsHK$9,619 HKD

4 data points across 1 retailer

1 retailer

C
B2C Jewels
20038778 · Nov 1
HK$9,619 HKD
$1,226 USD
View

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.

C
1.09ct Cushion
HK$9,619 HKD