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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 2557438429

Certificate GIA 2557438429

Diamond specifications and retailer prices

From $8,653 NZD
HK$38,100 HKD
As of October 31, 2026
Save $9,194 NZD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $17,847 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.5ct natural cushion diamond

This 1.5ct natural 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 2557438429. Listed at 19 retailers as of October 28, 2026, with prices from $8,653 to $17,847, a $9,194 spread on the same certified stone. Queensmith lists it at $17,847. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557438429
Dimensions7.69 × 5.74 × 3.86 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.69 mm5.74 mm1.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557438429
Side View
Table 63.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.3%

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: Oct 31
Current: $17,847 NZD|Low: $8,585 NZD|High: $17,993 NZD|Avg: $12,075 NZD|+1.8%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 10$8,653 NZD
Retailer 9$9,235 NZD
Retailer 14$9,650 NZD
Retailer 4$10,060 NZD
Retailer 7$10,197 NZD
Retailer 3$10,653 NZD
Retailer 16$10,655 NZD
Retailer 12$10,717 NZD
Retailer 13$11,070 NZD
Retailer 8$11,332 NZD
Retailer 5$11,356 NZD
Retailer 6$11,823 NZD
Retailer 11$12,611 NZD
Retailer 2$14,181 NZD
Retailer 15$17,096 NZD
Queensmith$17,847 NZD

26 data points across 16 retailers

19 retailers$8,653 NZD to $17,847 NZD

A
Cheapest Retailer
-
$8,653 NZD
HK$38,100 HKD
A
Retailer 2
-
$9,235 NZD
₹495,711 INR
View
A
Retailer 3
-
$9,650 NZD
$5,439 USD
View
Retailer 4
-
$9,937 NZD
SGD 7,568 SGD
View
Price last confirmed 17 days ago
A
Retailer 5
-
$10,060 NZD
$5,670 USD
View
A
Retailer 6
-
$10,197 NZD
SGD 7,766 SGD
View
A
Retailer 7
-
$10,601 NZD
$5,975 USD
View
A
Retailer 8
-
$10,653 NZD
$6,004 USD
View
Final sale: no returns
A
Retailer 9
-
$10,655 NZD
$6,005 USD
View
A
Retailer 10
-
$10,717 NZD
$6,040 USD
View
A
Retailer 11
-
$11,070 NZD
£4,913 GBP
View
B+
Retailer 12
-
$11,254 NZD
A$9,758 AUD
View
Retailer 13
-
$11,332 NZD
A$9,825 AUD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$11,356 NZD
$6,400 USD
View
B+
Retailer 15
-
$11,823 NZD
$6,663 USD
View
B+
Retailer 16
-
$12,611 NZD
€6,769 EUR
View
B+
Retailer 17
-
$14,181 NZD
ZAR 129,116 ZAR
View
B+
Retailer 18
-
$17,096 NZD
£7,587 GBP
View
Most Expensive
B
Queensmith
2557438429 · Oct 28
$17,847 NZD
£7,920 GBP
View
18 more retailers have this diamond
Prices start from $8,653 NZDSave up to $9,194 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
$8,653 NZD