CaratHunter
Plans
Cushion|Lab Grown|GIA

3.09ct H SI1 Cushion Lab Grown Diamond

EX • H/SI1 • GIA 6425401098

Certificate GIA 6425401098

Diamond specifications and retailer prices

From HK$9,248 HKD
As of November 5, 2026
Save HK$20,194 HKD (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$29,442 HKD at MOH London · As of November 5, 2026
View at MOH London

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6425401098. Listed at 10 retailers as of November 5, 2026, with prices from HK$9,248 to HK$29,442, a HK$20,194 spread on the same certified stone. MOH London lists it at HK$29,442. 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

3.09
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6425401098
Dimensions8.61 × 8.42 × 5.57 mm
L/W Ratio1.02
Top View
8.61 mm8.42 mm3.09 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425401098
Side View
Table 63.0%CrownGirdle: STK-NULPavilionCulet: NoneDepth 66.2%

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$29,442 HKD|Low: HK$7,877 HKD|High: HK$29,920 HKD|Avg: HK$14,428 HKD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8HK$7,877 HKD
Retailer 5HK$9,248 HKD
Retailer 9HK$9,914 HKD
Retailer 10HK$11,537 HKD
Retailer 2HK$12,156 HKD
Retailer 7HK$12,657 HKD
Retailer 4HK$13,284 HKD
Retailer 3HK$16,451 HKD
Retailer 6HK$19,515 HKD
MOH LondonHK$29,442 HKD

30 data points across 10 retailers

10 retailersHK$9,248 HKD to HK$29,442 HKD

Retailer 1
-
HK$7,877 HKD
Price last confirmed 25 days ago
A
Retailer 2
-
HK$9,248 HKD
View
A
Retailer 3
-
HK$9,914 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$11,537 HKD
View
B+
Retailer 5
-
HK$12,156 HKD
View
B+
Retailer 6
-
HK$12,657 HKD
View
B+
Retailer 7
-
HK$13,284 HKD
View
B+
Retailer 8
-
HK$16,451 HKD
View
B
Retailer 9
-
HK$19,515 HKD
View
Most Expensive
B
MOH London
6425401098 · Nov 5
HK$29,442 HKD
£2,958 GBP
View
9 more retailers have this diamond
Prices start from HK$9,248 HKDSave up to HK$20,194 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
3.09ct Cushion
HK$9,248 HKD