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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 $413 USD
As of November 6, 2026
Save $1,566 USD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,979 USD 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 $413 to $1,979, a $1,566 spread on the same certified stone. MOH London lists it at $1,979. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,979 USD|Low: $413 USD|High: $2,002 USD|Avg: $904 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$413 USD
Retailer 7$610 USD
Retailer 8$627 USD
Retailer 3$653 USD
Retailer 9$684 USD
Retailer 4$751 USD
Retailer 2$773 USD
Retailer 5$1,527 USD
MOH London$1,979 USD

45 data points across 9 retailers

10 retailers$413 USD to $1,979 USD

A
Cheapest Retailer
-
$413 USD
Final sale: no returns
A
Retailer 2
-
$471 USD
View
B+
Retailer 3
-
$610 USD
View
B+
Retailer 4
-
$627 USD
View
B+
Retailer 5
-
$653 USD
View
B+
Retailer 6
-
$751 USD
View
B+
Retailer 7
-
$773 USD
View
B
Retailer 8
-
$1,527 USD
View
B
Retailer 9
-
$1,781 USD
View
Most Expensive
B
MOH London
1515120078 · Nov 3
$1,979 USD
£1,558 GBP
View
9 more retailers have this diamond
Prices start from $413 USDSave up to $1,566 USD

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
$413 USD