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Marquise|Natural|GIA

1.50ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1425687574

Certificate GIA 1425687574

Diamond specifications and retailer prices

From $14,626 AUD
$10,250 USD
As of November 2, 2026
Save $499 AUD (3%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $20,938 AUD at NZ Jewellers · As of September 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1425687574. Listed at 10 retailers as of November 2, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1425687574
Dimensions10.67 × 5.90 × 3.74 mm
L/W Ratio1.81
Key to symbols
Twinning Wisp, Crystal, Feather, Indented Natural, Needle, Natural
Top View
10.67 mm5.90 mm1.50 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1425687574
Side View
Table 55.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $14,626 AUD|Low: $11,762 AUD|High: $20,530 AUD|Avg: $15,196 AUD|-5.4%
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
November 2, 2026
Retailer 3$11,762 AUD
Retailer 2$12,562 AUD
Retailer 4$12,668 AUD
Retailer 9$13,876 AUD
Retailer 11$13,990 AUD
Retailer 13$14,405 AUD
Retailer 1$14,626 AUD
Retailer 7$14,626 AUD
Retailer 6$15,125 AUD
Retailer 8$15,531 AUD
Retailer 5$16,535 AUD
Retailer 10$18,113 AUD
Retailer 12$19,856 AUD

16 data points across 13 retailers

10 retailers$14,626 AUD to $15,125 AUD

Retailer 1
-
$11,572 AUD
$8,110 USD
Price last confirmed 35 days ago
Retailer 2
-
$13,610 AUD
$9,538 USD
View
Price last confirmed 35 days ago
Retailer 3
-
$13,876 AUD
View
Price last confirmed 32 days ago
Retailer 4
-
$14,405 AUD
$10,095 USD
View
Price last confirmed 33 days ago
B
Retailer 5
-
$14,626 AUD
$10,250 USD
View
B
Retailer 6
-
$14,626 AUD
$10,250 USD
View
B
Retailer 7
-
$15,125 AUD
$10,600 USD
View
Retailer 8
-
$15,703 AUD
$11,005 USD
View
Price last confirmed 35 days ago
Retailer 9
-
$18,113 AUD
ZAR 205,071 ZAR
View
Price last confirmed 33 days ago
Most Expensive
NZ Jewellers
27c6c49f-0179-40f6-9b59-f890339ea0f5 · Sep 30
$20,938 AUD
$14,674 USD
View
Price last confirmed 33 days ago
9 more retailers have this diamond
Prices start from $14,626 AUDSave up to $499 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
$14,626 AUD