Cushion|Lab Grown|GIA

2.58ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • GIA 7518174829

Shape and cutting style on the report: Cushion modified brilliant

Certificate GIA 7518174829

Diamond specifications and retailer prices

From $1,023 USD
As of October 31, 2026
Save $500 USD (33%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,985 USD at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 2.58ct lab-grown cushion diamond

This 2.58ct lab-grown cushion sits in the two to three carat band, graded E 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 7518174829. Listed at 6 retailers as of October 30, 2026, with a 49% 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

2.58
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 7518174829
Dimensions9.24 × 7.38 × 5.06 mm
L/W Ratio1.25
Culet sizeNone
Key to symbols
Growth Remnant, Feather
Top View
9.24 mm7.38 mm2.58 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7518174829
Side View
Table 62.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,985 USD|Low: $1,023 USD|High: $5,832 USD|Avg: $2,246 USD|-2.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 19, 2026
Retailer 5$1,023 USD
Retailer 4$1,095 USD
Retailer 2$1,310 USD
Retailer 3$1,523 USD
Retailer 6$1,664 USD
Rare Carat$1,985 USD
Retailer 7$3,200 USD
Retailer 8$5,832 USD

6 data points across 8 retailers

6 retailers$1,023 USD to $1,523 USD

B+
Cheapest Retailer
-
$1,023 USD
B+
Retailer 2
-
$1,095 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,310 USD
View
B
Retailer 4
-
$1,498 USD
View
B
Retailer 5
-
$1,523 USD
HK$11,900 HKD
View
Most Expensive
Rare Carat
SKJ16-455 · Oct 21
$1,985 USD
View
Price last confirmed 9 days ago
5 more retailers have this diamond
Prices start from $1,023 USDSave up to $500 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.

B+
2.58ct Cushion
$1,023 USD