CaratHunter
Plans
Marquise|Natural|GIA

1.51ct D SI2 Marquise Natural Diamond

GD • D/SI2 • GIA 1555999788

Certificate GIA 1555999788

Diamond specifications and retailer prices

From $9,402 AUD
₹629,011 INR
As of November 2, 2026
Save $11,371 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $20,773 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1555999788. Listed at 15 retailers as of October 30, 2026, with prices from $9,402 to $20,773, a $11,371 spread on the same certified stone. NZ Jewellers lists it at $20,773. 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

1.51
Carat
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555999788
Dimensions10.70 × 5.95 × 3.85 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle, Indented Natural
Top View
10.70 mm5.95 mm1.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555999788
Side View
Table 63.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 64.7%

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: Nov 2
Current: $9,402 AUD|Low: $9,383 AUD|High: $17,517 AUD|Avg: $12,297 AUD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 1$9,402 AUD
Retailer 5$9,932 AUD
Retailer 7$11,464 AUD
Retailer 3$11,479 AUD
Retailer 6$12,612 AUD
Retailer 2$12,857 AUD
Retailer 4$17,310 AUD

40 data points across 7 retailers

15 retailers$9,402 AUD to $20,773 AUD

A
Cheapest Retailer
-
$9,402 AUD
₹629,011 INR
A
Retailer 2
-
$9,932 AUD
$6,977 USD
View
Final sale: no returns
B+
Retailer 3
-
$10,509 AUD
$7,382 USD
View
B+
Retailer 4
-
$10,734 AUD
$7,540 USD
View
B+
Retailer 5
-
$11,464 AUD
$8,053 USD
View
A
Retailer 6
-
$11,479 AUD
£6,349 GBP
View
B+
Retailer 7
-
$11,574 AUD
$8,130 USD
View
B+
Retailer 8
-
$12,419 AUD
$8,724 USD
View
B+
Retailer 9
-
$12,612 AUD
$8,859 USD
View
B+
Retailer 10
-
$12,690 AUD
$8,914 USD
View
B+
Retailer 11
-
$12,857 AUD
€8,601 EUR
View
B+
Retailer 12
-
$14,331 AUD
$10,067 USD
View
Retailer 13
-
$14,743 AUD
$10,356 USD
View
Price last confirmed 56 days ago
B
Retailer 14
-
$17,310 AUD
£9,574 GBP
View
Most Expensive
B
NZ Jewellers
218bb830-27e3-44fe-b6b1-239dfe633603 · Oct 30
$20,773 AUD
$14,592 USD
View
14 more retailers have this diamond
Prices start from $9,402 AUDSave up to $11,371 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
1.51ct Marquise
$9,402 AUD