CaratHunter
Plans
Cushion|Natural|GIA

1.50ct F SI2 Cushion Natural Diamond

EX • F/SI2 • GIA 2557551279

Certificate GIA 2557551279

Diamond specifications and retailer prices

From $5,918 AUD
HK$32,400 HKD
As of November 1, 2026
Save $7,302 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,220 AUD 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557551279. Listed at 15 retailers as of October 28, 2026, with prices from $5,918 to $13,220, a $7,302 spread on the same certified stone. Queensmith lists it at $13,220. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557551279
Dimensions7.54 × 5.81 × 3.99 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.54 mm5.81 mm1.50 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557551279
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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 1
Current: $13,220 AUD|Low: $5,863 AUD|High: $13,310 AUD|Avg: $8,394 AUD|+2.0%
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
November 3, 2026
Retailer 10$5,918 AUD
Retailer 6$6,314 AUD
Retailer 5$6,972 AUD
Retailer 3$7,293 AUD
Retailer 7$7,445 AUD
Retailer 12$7,534 AUD
Retailer 2$7,709 AUD
Retailer 11$7,901 AUD
Retailer 4$8,121 AUD
Retailer 13$8,303 AUD
Retailer 8$8,940 AUD
Retailer 9$12,585 AUD
Queensmith$13,220 AUD

25 data points across 13 retailers

15 retailers$5,918 AUD to $13,220 AUD

A
Cheapest Retailer
-
$5,918 AUD
HK$32,400 HKD
A
Retailer 2
-
$6,314 AUD
₹421,397 INR
View
A
Retailer 3
-
$6,972 AUD
SGD 6,603 SGD
View
A
Retailer 4
-
$7,249 AUD
$5,080 USD
View
A
Retailer 5
-
$7,293 AUD
$5,111 USD
View
Final sale: no returns
A
Retailer 6
-
$7,445 AUD
£4,108 GBP
View
B+
Retailer 7
-
$7,534 AUD
SGD 7,135 SGD
View
A
Retailer 8
-
$7,709 AUD
£4,254 GBP
View
B+
Retailer 9
-
$7,901 AUD
$5,537 USD
View
B+
Retailer 10
-
$8,121 AUD
$5,692 USD
View
B+
Retailer 11
-
$8,303 AUD
$5,819 USD
View
B+
Retailer 12
-
$8,346 AUD
View
B+
Retailer 13
-
$8,940 AUD
€5,967 EUR
View
B
Retailer 14
-
$12,585 AUD
£6,945 GBP
View
Most Expensive
B
Queensmith
2557551279 · Oct 28
$13,220 AUD
£7,295 GBP
View
14 more retailers have this diamond
Prices start from $5,918 AUDSave up to $7,302 AUD

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
$5,918 AUD