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Cushion|Lab Grown|GIA

1.29ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1 • GIA 1515120078

Certificate GIA 1515120078

Diamond specifications and retailer prices

From HK$3,237 HKD
As of November 6, 2026
Save HK$12,271 HKD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$15,508 HKD at MOH London · As of November 3, 2026
View at MOH London

About this 1.29ct lab-grown cushion diamond

This 1.29ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1515120078. Listed at 10 retailers as of November 3, 2026, with prices from HK$3,237 to HK$15,508, a HK$12,271 spread on the same certified stone. MOH London lists it at HK$15,508. 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

1.29
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 1515120078
Dimensions7.20 × 5.59 × 3.90 mm
L/W Ratio1.29
Girdle conditionFaceted
Cert comments
This is a man-made diamond produced by CVD (Chemical Vapor Deposition) growth process and has evidence of post-growth treatments to change the color.
Key to symbols
Growth Remnant
Top View
7.20 mm5.59 mm1.29 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1515120078
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.8%

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 6
Current: HK$15,508 HKD|Low: HK$3,237 HKD|High: HK$15,687 HKD|Avg: HK$7,086 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6HK$3,237 HKD
Retailer 7HK$4,781 HKD
Retailer 8HK$4,914 HKD
Retailer 4HK$5,118 HKD
Retailer 9HK$5,361 HKD
Retailer 2HK$5,886 HKD
Retailer 3HK$6,058 HKD
Retailer 5HK$11,968 HKD
MOH LondonHK$15,508 HKD

46 data points across 9 retailers

10 retailersHK$3,237 HKD to HK$15,508 HKD

A
Cheapest Retailer
-
HK$3,237 HKD
Final sale: no returns
A
Retailer 2
-
HK$3,691 HKD
View
B+
Retailer 3
-
HK$4,781 HKD
View
B+
Retailer 4
-
HK$4,914 HKD
View
B+
Retailer 5
-
HK$5,118 HKD
View
B+
Retailer 6
-
HK$5,886 HKD
View
B+
Retailer 7
-
HK$6,058 HKD
View
B
Retailer 8
-
HK$11,968 HKD
View
B
Retailer 9
-
HK$13,958 HKD
View
Most Expensive
B
MOH London
1515120078 · Nov 3
HK$15,508 HKD
£1,558 GBP
View
9 more retailers have this diamond
Prices start from HK$3,237 HKDSave up to HK$12,271 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
1.29ct Cushion
HK$3,237 HKD