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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 $1,308 SGD
$1,023 USD
As of October 31, 2026
Save $639 SGD (33%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,538 SGD 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $2,538 SGD|Low: $1,308 SGD|High: $7,456 SGD|Avg: $2,872 SGD|-2.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 19, 2026
Retailer 5$1,308 SGD
Retailer 4$1,400 SGD
Retailer 2$1,675 SGD
Retailer 3$1,947 SGD
Retailer 6$2,127 SGD
Rare Carat$2,538 SGD
Retailer 7$4,091 SGD
Retailer 8$7,456 SGD

6 data points across 8 retailers

6 retailers$1,308 SGD to $1,947 SGD

B+
Cheapest Retailer
-
$1,308 SGD
$1,023 USD
B+
Retailer 2
-
$1,400 SGD
$1,095 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,675 SGD
$1,310 USD
View
B
Retailer 4
-
$1,915 SGD
$1,498 USD
View
B
Retailer 5
-
$1,947 SGD
HK$11,900 HKD
View
Most Expensive
Rare Carat
SKJ16-455 · Oct 21
$2,538 SGD
$1,985 USD
View
Price last confirmed 10 days ago
5 more retailers have this diamond
Prices start from $1,308 SGDSave up to $639 SGD

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
$1,308 SGD