Cushion|Lab Grown|IGI

2.59ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG812645289

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG812645289

Diamond specifications and retailer prices

From €354 EUR
HK$3,100 HKD
As of October 31, 2026
Save €1,149 EUR (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,970 EUR at Brilliant Earth · As of September 23, 2026
View at Brilliant Earth

About this 2.59ct lab-grown cushion diamond

This 2.59ct lab-grown cushion sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG812645289 or 812645289. Listed at 13 retailers as of October 28, 2026, with a 325% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.59
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812645289
Dimensions9.75 × 6.81 × 4.46 mm
L/W Ratio1.43
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.75 mm6.81 mm2.59 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812645289
Side View
Table 64.0%Crown 35°Girdle: MED-STKPavilion 32°Culet: NoneDepth 65.5%

Caratlytics Score

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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: Oct 31
Current: €497 EUR|Low: €293 EUR|High: €1,502 EUR|Avg: €768 EUR|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 5€293 EUR
Retailer 8€354 EUR
Retailer 11€403 EUR
Retailer 10€495 EUR
Retailer 1€497 EUR
Retailer 2€532 EUR
Retailer 12€572 EUR
Retailer 4€595 EUR
Retailer 13€744 EUR
Retailer 7€819 EUR
Retailer 6€1,016 EUR
Retailer 3€1,303 EUR
Retailer 9€1,502 EUR

38 data points across 13 retailers

13 retailers€354 EUR to €1,502 EUR

A
Cheapest Retailer
-
€354 EUR
HK$3,100 HKD
A
Retailer 2
-
€403 EUR
£356 GBP
View
A
Retailer 3
-
€495 EUR
$555 USD
View
A
Retailer 4
-
€497 EUR
View
B+
Retailer 5
-
€532 EUR
$597 USD
View
A
Retailer 6
-
€572 EUR
£505 GBP
View
A
Retailer 7
-
€595 EUR
$667 USD
View
A
Retailer 8
-
€744 EUR
$835 USD
View
B+
Retailer 9
-
€819 EUR
$919 USD
View
B+
Retailer 10
-
€1,016 EUR
SGD 1,540 SGD
View
B+
Retailer 11
-
€1,303 EUR
£1,151 GBP
View
B
Retailer 12
-
€1,502 EUR
$1,685 USD
View
Most Expensive
Brilliant Earth
20555874A · Sep 23
€1,970 EUR
$2,210 USD
View
Price last confirmed 40 days ago
12 more retailers have this diamond
Prices start from €354 EURSave up to €1,149 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
2.59ct Cushion
€354 EUR