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Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2564368871

Certificate GIA 2564368871

Diamond specifications and retailer prices

From $13,526 AUD
SGD 12,810 SGD
As of November 1, 2026
Save $10,718 AUD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $24,244 AUD at With Clarity · As of November 1, 2026
View at With Clarity

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded G 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 2564368871. Listed at 16 retailers as of November 1, 2026, with prices from $13,526 to $24,244, a $10,718 spread on the same certified stone. With Clarity lists it at $24,244. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.9°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 2564368871
Dimensions11.76 × 5.65 × 3.59 mm
L/W Ratio2.08
Culet sizeNone
Top View
11.76 mm5.65 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564368871
Side View
Table 58.0%Crown 39.9°Girdle: STK-VTKPavilion 39.78°Culet: NDepth 63.5%

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: $17,282 AUD|Low: $13,526 AUD|High: $24,244 AUD|Avg: $16,667 AUD|+0.4%
Retailer 1
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
With Clarity
November 2, 2026
Retailer 6$13,526 AUD
Retailer 2$14,198 AUD
Retailer 10$14,469 AUD
Retailer 7$14,572 AUD
Retailer 11$14,643 AUD
Retailer 15$14,682 AUD
Retailer 14$14,954 AUD
Retailer 4$14,968 AUD
Retailer 8$14,969 AUD
Retailer 5$17,228 AUD
Retailer 1$17,282 AUD
Retailer 13$17,394 AUD
Retailer 12$17,760 AUD
Retailer 9$19,941 AUD
Retailer 3$21,264 AUD
With Clarity$24,244 AUD

29 data points across 16 retailers

16 retailers$13,526 AUD to $24,244 AUD

B+
Cheapest Retailer
-
$13,526 AUD
SGD 12,810 SGD
B+
Retailer 2
-
$14,198 AUD
$9,950 USD
View
B+
Retailer 3
-
$14,469 AUD
$10,140 USD
View
B+
Retailer 4
-
$14,572 AUD
$10,212 USD
View
B+
Retailer 5
-
$14,643 AUD
SGD 13,868 SGD
View
B+
Retailer 6
-
$14,682 AUD
$10,290 USD
View
B+
Retailer 7
-
$14,954 AUD
$10,480 USD
View
B+
Retailer 8
-
$14,968 AUD
$10,490 USD
View
B+
Retailer 9
-
$14,969 AUD
£8,260 GBP
View
B
Retailer 10
-
$17,228 AUD
$12,074 USD
View
B
Retailer 11
-
$17,282 AUD
€11,535 EUR
View
B
Retailer 12
-
$17,394 AUD
$12,190 USD
View
B
Retailer 13
-
$17,760 AUD
$12,447 USD
View
B
Retailer 14
-
$19,941 AUD
$13,975 USD
View
B
Retailer 15
-
$21,264 AUD
$14,902 USD
View
Most Expensive
B
With Clarity
2564368871 · Nov 1
$24,244 AUD
$16,991 USD
View
15 more retailers have this diamond
Prices start from $13,526 AUDSave up to $10,718 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
$13,526 AUD