Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 7558706544

Certificate GIA 7558706544

Diamond specifications and retailer prices

From $11,564 AUD
$8,104 USD
As of November 2, 2026
Save $10,550 AUD (48%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $22,114 AUD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558706544. Listed at 23 retailers as of October 30, 2026, with prices from $11,564 to $22,114, a $10,550 spread on the same certified stone. NZ Jewellers lists it at $22,114. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.32°
Pavilion angle41.54°
OriginNatural
Grading LabGIA
CertificateGIA 7558706544
Dimensions11.37 × 6.01 × 3.77 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.37 mm6.01 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558706544
Side View
Table 61.0%Crown 39.32°Girdle: MED-THKPavilion 41.54°Culet: NoneDepth 62.8%

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 2
Current: $22,114 AUD|Low: $11,445 AUD|High: $22,114 AUD|Avg: $15,463 AUD
NZ Jewellers
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
November 2, 2026
Retailer 3$11,564 AUD
Retailer 6$12,815 AUD
Retailer 5$13,149 AUD
Retailer 14$13,269 AUD
Retailer 16$13,269 AUD
Retailer 4$14,375 AUD
Retailer 9$14,400 AUD
Retailer 12$14,592 AUD
Retailer 15$14,596 AUD
Retailer 8$14,763 AUD
Retailer 13$14,767 AUD
Retailer 7$15,610 AUD
Retailer 2$16,713 AUD
Retailer 11$19,493 AUD
Retailer 10$20,722 AUD
NZ Jewellers$22,114 AUD

44 data points across 16 retailers

23 retailers$11,564 AUD to $22,114 AUD

B+
Cheapest Retailer
-
$11,564 AUD
$8,104 USD
B+
Retailer 2
-
$12,424 AUD
$8,707 USD
View
B
Retailer 3
-
$12,815 AUD
$8,981 USD
View
B
Retailer 4
-
$13,149 AUD
$9,215 USD
View
B
Retailer 5
-
$13,269 AUD
$9,299 USD
View
B
Retailer 6
-
$13,269 AUD
$9,299 USD
View
Final sale: no returns
B
Retailer 7
-
$13,380 AUD
$9,377 USD
View
B
Retailer 8
-
$14,375 AUD
$10,074 USD
View
B+
Retailer 9
-
$14,400 AUD
£7,946 GBP
View
Retailer 10
-
$14,592 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$14,596 AUD
$10,229 USD
View
Retailer 12
-
$14,763 AUD
$10,346 USD
View
Price last confirmed 11 days ago
Retailer 13
-
$14,767 AUD
$10,349 USD
View
Price last confirmed 12 days ago
Retailer 14
-
$15,610 AUD
$10,940 USD
View
Price last confirmed 11 days ago
Retailer 15
-
$15,610 AUD
$10,940 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
$15,716 AUD
$11,014 USD
View
B
Retailer 17
-
$15,832 AUD
$11,096 USD
View
Retailer 18
-
$16,138 AUD
$11,310 USD
View
Price last confirmed 12 days ago
B
Retailer 19
-
$16,586 AUD
$11,624 USD
View
B
Retailer 20
-
$16,713 AUD
€11,155 EUR
View
B
Retailer 21
-
$19,493 AUD
ZAR 220,698 ZAR
View
B
Retailer 22
-
$20,722 AUD
£11,435 GBP
View
Most Expensive
B
NZ Jewellers
516e55f6-e4ab-4615-9d7f-69bdbc8f4a91 · Oct 30
$22,114 AUD
$15,498 USD
View
22 more retailers have this diamond
Prices start from $11,564 AUDSave up to $10,550 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
$11,564 AUD