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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555333072

Certificate GIA 6555333072

Diamond specifications and retailer prices

From $12,704 AUD
₹849,903 INR
As of October 30, 2026
Save $10,491 AUD (45%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $23,195 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 D 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 6555333072. Listed at 21 retailers as of October 30, 2026, with prices from $12,704 to $23,195, a $10,491 spread on the same certified stone. NZ Jewellers lists it at $23,195. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555333072
Dimensions11.51 × 6.05 × 3.55 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural
Top View
11.51 mm6.05 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555333072
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 58.6%

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 30
Current: $16,721 AUD|Low: $12,628 AUD|High: $21,996 AUD|Avg: $16,613 AUD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3$12,704 AUD
Retailer 7$13,395 AUD
Retailer 2$15,239 AUD
Retailer 5$15,318 AUD
Retailer 1$16,721 AUD
Retailer 8$16,897 AUD
Retailer 6$20,200 AUD
Retailer 4$21,851 AUD

36 data points across 8 retailers

21 retailers$12,704 AUD to $23,195 AUD

A
Cheapest Retailer
-
$12,704 AUD
₹849,903 INR
A
Retailer 2
-
$12,731 AUD
$8,943 USD
View
A
Retailer 3
-
$13,045 AUD
View
A
Retailer 4
-
$13,395 AUD
$9,409 USD
View
Final sale: no returns
B+
Retailer 5
-
$14,081 AUD
$9,891 USD
View
B+
Retailer 6
-
$14,253 AUD
$10,012 USD
View
B+
Retailer 7
-
$14,549 AUD
$10,220 USD
View
B+
Retailer 8
-
$15,168 AUD
$10,655 USD
View
B+
Retailer 9
-
$15,239 AUD
£8,429 GBP
View
Retailer 10
-
$15,318 AUD
View
Price last confirmed 9 days ago
Retailer 11
-
$15,361 AUD
$10,790 USD
View
Price last confirmed 17 days ago
B+
Retailer 12
-
$16,595 AUD
$11,657 USD
View
B+
Retailer 13
-
$16,642 AUD
$11,690 USD
View
B+
Retailer 14
-
$16,721 AUD
€11,186 EUR
View
B+
Retailer 15
-
$16,897 AUD
$11,869 USD
View
B+
Retailer 16
-
$17,035 AUD
$11,966 USD
View
Retailer 17
-
$19,196 AUD
$13,484 USD
View
Price last confirmed 56 days ago
B+
Retailer 18
-
$19,202 AUD
$13,488 USD
View
Retailer 19
-
$20,200 AUD
ZAR 229,228 ZAR
View
Price last confirmed 15 days ago
B
Retailer 20
-
$21,851 AUD
£12,086 GBP
View
Most Expensive
B
NZ Jewellers
8def2af1-4f82-4d96-a1b4-3cf8b885ba7f · Oct 30
$23,195 AUD
$16,293 USD
View
20 more retailers have this diamond
Prices start from $12,704 AUDSave up to $10,491 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 Marquise
$12,704 AUD