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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 5543508231

Certificate GIA 5543508231

Diamond specifications and retailer prices

From $10,220 NZD
HK$45,000 HKD
As of October 31, 2026
Save $9,215 NZD (47%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $19,435 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 5543508231. Listed at 19 retailers as of October 28, 2026, with prices from $10,220 to $19,435, a $9,215 spread on the same certified stone. Queensmith lists it at $19,435. 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
OriginNatural
Grading LabGIA
CertificateGIA 5543508231
Dimensions7.65 × 5.88 × 3.99 mm
L/W Ratio1.30
Top View
7.65 mm5.88 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5543508231
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 67.9%

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: $19,435 NZD|Low: $10,129 NZD|High: $19,593 NZD|Avg: $13,798 NZD|+1.6%
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
October 31, 2026
Retailer 8$10,220 NZD
Retailer 2$10,845 NZD
Retailer 15$11,066 NZD
Retailer 7$12,027 NZD
Retailer 10$12,393 NZD
Retailer 5$12,438 NZD
Retailer 12$12,647 NZD
Retailer 11$12,706 NZD
Retailer 3$12,993 NZD
Retailer 6$13,767 NZD
Retailer 4$13,971 NZD
Retailer 9$14,725 NZD
Retailer 14$16,411 NZD
Retailer 13$18,883 NZD
Queensmith$19,435 NZD

22 data points across 15 retailers

19 retailers$10,220 NZD to $19,435 NZD

A
Cheapest Retailer
-
$10,220 NZD
HK$45,000 HKD
A
Retailer 2
-
$10,845 NZD
₹582,144 INR
View
B+
Retailer 3
-
$11,066 NZD
$6,237 USD
View
Retailer 4
-
$11,721 NZD
SGD 8,927 SGD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
$12,027 NZD
SGD 9,160 SGD
View
B+
Retailer 6
-
$12,393 NZD
$6,985 USD
View
B+
Retailer 7
-
$12,393 NZD
$6,985 USD
View
B+
Retailer 8
-
$12,438 NZD
$7,010 USD
View
Final sale: no returns
Retailer 9
-
$12,507 NZD
$7,049 USD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$12,647 NZD
£5,613 GBP
View
B+
Retailer 11
-
$12,706 NZD
£5,639 GBP
View
Retailer 12
-
$12,993 NZD
A$11,266 AUD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$13,722 NZD
A$11,898 AUD
View
B+
Retailer 14
-
$13,767 NZD
$7,759 USD
View
B+
Retailer 15
-
$13,971 NZD
$7,874 USD
View
B+
Retailer 16
-
$14,725 NZD
€7,904 EUR
View
B+
Retailer 17
-
$16,411 NZD
ZAR 149,421 ZAR
View
B
Retailer 18
-
$18,883 NZD
£8,380 GBP
View
Most Expensive
B
Queensmith
5543508231 · Oct 28
$19,435 NZD
£8,625 GBP
View
18 more retailers have this diamond
Prices start from $10,220 NZDSave up to $9,215 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
$10,220 NZD