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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 €368 EUR
$413 USD
As of November 1, 2026
Save €1,396 EUR (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,764 EUR 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 11 retailers as of November 1, 2026, with prices from €368 to €1,764, a €1,396 spread on the same certified stone. MOH London lists it at €1,764. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €1,764 EUR|Low: €368 EUR|High: €1,785 EUR|Avg: €848 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 7€368 EUR
Retailer 11€420 EUR
Retailer 8€544 EUR
Retailer 9€559 EUR
Retailer 2€585 EUR
Retailer 10€610 EUR
Retailer 4€671 EUR
Retailer 5€691 EUR
Retailer 6€1,362 EUR
Retailer 3€1,588 EUR
MOH London€1,764 EUR

44 data points across 11 retailers

11 retailers€368 EUR to €1,764 EUR

A
Cheapest Retailer
-
€368 EUR
$413 USD
Final sale: no returns
A
Retailer 2
-
€420 EUR
$471 USD
View
B+
Retailer 3
-
€544 EUR
$610 USD
View
B+
Retailer 4
-
€559 EUR
HK$4,900 HKD
View
B+
Retailer 5
-
€585 EUR
£517 GBP
View
Retailer 6
-
€610 EUR
$684 USD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
€671 EUR
£593 GBP
View
B+
Retailer 8
-
€691 EUR
View
B
Retailer 9
-
€1,362 EUR
$1,527 USD
View
B
Retailer 10
-
€1,588 EUR
$1,781 USD
View
Most Expensive
B
MOH London
1515120078 · Nov 3
€1,764 EUR
£1,558 GBP
View
10 more retailers have this diamond
Prices start from €368 EURSave up to €1,396 EUR

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
€368 EUR