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Cushion|Lab Grown|IGI

3.08ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG607388765

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG607388765

Diamond specifications and retailer prices

From HK$5,016 HKD
As of November 5, 2026
Save HK$16,302 HKD (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$21,318 HKD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.08ct lab-grown cushion diamond

This 3.08ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG607388765 or 607388765. Listed at 10 retailers as of November 4, 2026, with prices from HK$5,016 to HK$21,318, a HK$16,302 spread on the same certified stone. Brilliant Earth lists it at HK$21,318. 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

3.08
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607388765
Dimensions8.55 × 8.38 × 5.49 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.55 mm8.38 mm3.08 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG607388765
Side View
Table 63.0%Crown 35.8°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 65.5%

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: Nov 5
Current: HK$21,318 HKD|Low: HK$3,856 HKD|High: HK$24,845 HKD|Avg: HK$9,784 HKD|-14.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 9HK$3,856 HKD
Retailer 10HK$4,742 HKD
Retailer 7HK$5,016 HKD
Retailer 6HK$5,627 HKD
Retailer 3HK$6,129 HKD
Retailer 2HK$6,270 HKD
Retailer 11HK$6,842 HKD
Retailer 12HK$8,245 HKD
Retailer 5HK$15,063 HKD
Retailer 8HK$15,440 HKD
Retailer 4HK$18,747 HKD
Brilliant EarthHK$21,318 HKD

39 data points across 12 retailers

10 retailersHK$5,016 HKD to HK$21,318 HKD

Retailer 1
-
HK$3,856 HKD
Price last confirmed 13 days ago
A
Retailer 2
-
HK$5,016 HKD
View
A
Retailer 3
-
HK$5,627 HKD
View
B+
Retailer 4
-
HK$6,129 HKD
View
A
Retailer 5
-
HK$6,270 HKD
View
A
Retailer 6
-
HK$6,842 HKD
View
A
Retailer 7
-
HK$8,245 HKD
View
B
Retailer 8
-
HK$15,063 HKD
View
B
Retailer 9
-
HK$18,747 HKD
View
Most Expensive
B
Brilliant Earth
8587033A · Nov 4
HK$21,318 HKD
$2,720 USD
View
9 more retailers have this diamond
Prices start from HK$5,016 HKDSave up to HK$16,302 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
3.08ct Cushion
HK$5,016 HKD