Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 7541535497

Certificate GIA 7541535497

Diamond specifications and retailer prices

From $9,961 AUD
$6,981 USD
As of November 1, 2026
Save $7,767 AUD (44%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $21,275 AUD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7541535497. Listed at 26 retailers as of November 1, 2026, with a 78% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.56°
Pavilion angle39.19°
OriginNatural
Grading LabGIA
CertificateGIA 7541535497
Dimensions11.16 × 5.87 × 3.75 mm
L/W Ratio1.90
Girdle conditionExtremely Thick
Key to symbols
Twinning Wisp, Feather, Natural
Top View
11.16 mm5.87 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7541535497
Side View
Table 60.0%Crown 38.56°Girdle: THK-ETKPavilion 39.19°Culet: NoneDepth 63.8%

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: Nov 1
Current: $12,408 AUD|Low: $9,750 AUD|High: $17,942 AUD|Avg: $12,567 AUD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$9,961 AUD
Retailer 6$10,636 AUD
Retailer 5$10,638 AUD
Retailer 8$10,726 AUD
Retailer 3$11,761 AUD
Retailer 1$12,408 AUD
Retailer 2$13,896 AUD
Retailer 4$17,728 AUD

37 data points across 8 retailers

26 retailers$9,961 AUD to $17,728 AUD

B+
Cheapest Retailer
-
$9,961 AUD
$6,981 USD
B+
Retailer 2
-
$10,636 AUD
$7,454 USD
View
Final sale: no returns
B+
Retailer 3
-
$10,638 AUD
$7,455 USD
View
Retailer 4
-
$10,638 AUD
$7,455 USD
View
Price last confirmed 18 days ago
B+
Retailer 5
-
$10,726 AUD
$7,517 USD
View
B+
Retailer 6
-
$11,333 AUD
$7,942 USD
View
Retailer 7
-
$11,524 AUD
$8,076 USD
View
Price last confirmed 42 days ago
Retailer 8
-
$11,524 AUD
$8,076 USD
View
Price last confirmed 26 days ago
Retailer 9
-
$11,524 AUD
$8,076 USD
View
Price last confirmed 11 days ago
Retailer 10
-
$11,702 AUD
$8,201 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
$11,702 AUD
$8,201 USD
View
B+
Retailer 12
-
$11,761 AUD
£6,490 GBP
View
B
Retailer 13
-
$12,200 AUD
$8,550 USD
View
B
Retailer 14
-
$12,200 AUD
$8,550 USD
View
B+
Retailer 15
-
$12,408 AUD
£6,847 GBP
View
B
Retailer 16
-
$12,600 AUD
$8,830 USD
View
B
Retailer 17
-
$13,297 AUD
$9,319 USD
View
Retailer 18
-
$13,297 AUD
$9,319 USD
View
Price last confirmed 42 days ago
Retailer 19
-
$13,297 AUD
$9,319 USD
View
Price last confirmed 24 days ago
Retailer 20
-
$13,297 AUD
$9,319 USD
View
Price last confirmed 12 days ago
B
Retailer 21
-
$13,896 AUD
€9,275 EUR
View
Retailer 22
-
$14,009 AUD
$9,818 USD
View
Price last confirmed 18 days ago
B
Retailer 23
-
$17,728 AUD
£9,783 GBP
View
Retailer 24
-
$21,275 AUD
$14,910 USD
View
Price last confirmed 43 days ago
Retailer 25
-
$21,275 AUD
$14,910 USD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
05ef0276-1128-4532-9b9c-db9d5ddd9864 · Sep 29
$21,275 AUD
$14,910 USD
View
Price last confirmed 34 days ago
25 more retailers have this diamond
Prices start from $9,961 AUDSave up to $7,767 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.

B+
1.50ct Marquise
$9,961 AUD