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Cushion|Lab Grown|GIA

1.50ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • GIA 7476845663

Certificate GIA 7476845663

Diamond specifications and retailer prices

From $886 NZD
As of November 6, 2026
Save $4,225 NZD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,400 NZD at Steven Stone · As of November 7, 2026
View at Steven Stone

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two 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 7476845663. Listed at 13 retailers as of November 5, 2026, with a 477% 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 7476845663
Dimensions7.88 × 6.10 × 4.09 mm
L/W Ratio1.29
Top View
7.88 mm6.10 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7476845663
Side View
Table 64.0%CrownGirdlePavilionCulet: NoneDepth 67.1%

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 6
Current: $1,755 NZD|Low: $1,003 NZD|High: $9,020 NZD|Avg: $3,149 NZD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Steven Stone
November 7, 2026
Retailer 4$1,003 NZD
Retailer 7$1,234 NZD
Retailer 8$1,474 NZD
Retailer 1$1,755 NZD
Retailer 9$1,890 NZD
Retailer 6$3,391 NZD
Retailer 3$3,518 NZD
Retailer 2$5,110 NZD
Steven Stone$5,400 NZD
Retailer 5$7,955 NZD

44 data points across 10 retailers

13 retailers$886 NZD to $5,110 NZD

A
Cheapest Retailer
-
$886 NZD
A
Retailer 2
-
$1,003 NZD
View
Final sale: no returns
B+
Retailer 3
-
$1,234 NZD
View
B+
Retailer 4
-
$1,362 NZD
View
B
Retailer 5
-
$1,474 NZD
View
B+
Retailer 6
-
$1,755 NZD
View
Retailer 7
-
$1,890 NZD
View
Price last confirmed 15 days ago
B
Retailer 8
-
$3,391 NZD
View
B
Retailer 9
-
$3,518 NZD
View
B
Retailer 10
-
$4,192 NZD
View
B
Retailer 11
-
$5,110 NZD
View
Most Expensive
Steven Stone
338512738 · Nov 7
$5,400 NZD
£2,357 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $886 NZDSave up to $4,225 NZD

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
1.50ct Cushion
$886 NZD