Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1567270754

Certificate GIA 1567270754

Diamond specifications and retailer prices

From $11,183 NZD
$6,292 USD
As of November 2, 2026
Save $3,780 NZD (25%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $25,433 NZD at NZ Jewellers · As of October 11, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1567270754. Listed at 13 retailers as of November 2, 2026, with a 34% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1567270754
Dimensions11.45 × 6.01 × 3.57 mm
L/W Ratio1.91
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
11.45 mm6.01 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1567270754
Side View
Table 58.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 59.4%

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: $25,433 NZD|Low: $10,347 NZD|High: $25,433 NZD|Avg: $15,458 NZD|+6.7%
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
November 2, 2026
Retailer 8$11,183 NZD
Retailer 9$11,332 NZD
Retailer 10$12,048 NZD
Retailer 6$12,160 NZD
Retailer 5$12,868 NZD
Retailer 4$13,143 NZD
Retailer 14$14,037 NZD
Retailer 7$14,476 NZD
Retailer 2$14,963 NZD
Retailer 11$15,022 NZD
Retailer 3$15,207 NZD
Retailer 12$16,547 NZD
Retailer 13$17,546 NZD
Retailer 15$21,448 NZD
NZ Jewellers$25,433 NZD

40 data points across 15 retailers

13 retailers$11,183 NZD to $14,963 NZD

A
Cheapest Retailer
-
$11,183 NZD
$6,292 USD
A
Retailer 2
-
$11,332 NZD
$6,376 USD
View
A
Retailer 3
-
$11,369 NZD
A$9,842 AUD
View
A
Retailer 4
-
$12,048 NZD
$6,779 USD
View
Retailer 5
-
$12,868 NZD
$7,240 USD
View
Price last confirmed 21 days ago
Retailer 6
-
$13,143 NZD
$7,395 USD
View
Price last confirmed 21 days ago
Retailer 7
-
$14,037 NZD
$7,898 USD
View
Price last confirmed 21 days ago
Retailer 8
-
$14,476 NZD
$8,145 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
$14,963 NZD
£6,629 GBP
View
Retailer 10
-
$15,207 NZD
$8,556 USD
View
Price last confirmed 23 days ago
Retailer 11
-
$17,546 NZD
$9,872 USD
View
Price last confirmed 21 days ago
Retailer 12
-
$21,448 NZD
£9,502 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
d63f619d-cfbf-47ba-ad25-460cd66cf1bb · Oct 11
$25,433 NZD
$14,310 USD
View
Price last confirmed 22 days ago
12 more retailers have this diamond
Prices start from $11,183 NZDSave up to $3,780 NZD

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
$11,183 NZD