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Cushion|Lab Grown|IGI

3.05ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG693508842

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

Certificate IGI LG693508842

Diamond specifications and retailer prices

From HK$3,978 HKD
$507 USD
As of October 25, 2026
Save HK$24,267 HKD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$28,245 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG693508842 or 693508842. Listed at 12 retailers as of October 25, 2026, with prices from HK$3,978 to HK$28,245, a HK$24,267 spread on the same certified stone. Brilliant Earth lists it at HK$28,245. 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

3.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG693508842
Dimensions8.43 × 8.34 × 5.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.43 mm8.34 mm3.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG693508842
Side View
Table 63.0%Crown 36.4°Girdle: MED-STKPavilion 39°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 25
Current: HK$28,245 HKD|Low: HK$3,978 HKD|High: HK$31,540 HKD|Avg: HK$10,614 HKD|-10.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 6HK$3,978 HKD
Retailer 9HK$4,900 HKD
Retailer 10HK$5,610 HKD
Retailer 5HK$5,824 HKD
Retailer 3HK$6,292 HKD
Retailer 2HK$6,547 HKD
Retailer 12HK$6,951 HKD
Retailer 4HK$7,956 HKD
Retailer 7HK$15,574 HKD
Retailer 8HK$15,644 HKD
Retailer 11HK$18,838 HKD
Brilliant EarthHK$28,245 HKD

23 data points across 12 retailers

12 retailersHK$3,978 HKD to HK$28,245 HKD

A
Cheapest Retailer
-
HK$3,978 HKD
$507 USD
Retailer 2
-
HK$4,900 HKD
£492 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
HK$5,610 HKD
$715 USD
View
A
Retailer 4
-
HK$5,824 HKD
€707 EUR
View
B+
Retailer 5
-
HK$6,292 HKD
$802 USD
View
A
Retailer 6
-
HK$6,547 HKD
£657 GBP
View
A
Retailer 7
-
HK$6,951 HKD
$886 USD
View
A
Retailer 8
-
HK$7,956 HKD
$1,014 USD
View
B
Retailer 9
-
HK$15,574 HKD
$1,985 USD
View
B
Retailer 10
-
HK$15,644 HKD
£1,570 GBP
View
B
Retailer 11
-
HK$18,838 HKD
$2,401 USD
View
Most Expensive
B
Brilliant Earth
13577120A · Oct 29
HK$28,245 HKD
$3,600 USD
View
11 more retailers have this diamond
Prices start from HK$3,978 HKDSave up to HK$24,267 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
3.05ct Cushion
HK$3,978 HKD