CaratHunter
Plans
Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 2457470388

Certificate GIA 2457470388

Diamond specifications and retailer prices

From $8,612 NZD
$4,854 USD
As of November 2, 2026
Save $3,292 NZD (28%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,054 NZD at GemsNY · As of October 8, 2026
View at GemsNY

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded H 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 2457470388. Listed at 15 retailers as of November 2, 2026, with a 38% 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2457470388
Dimensions6.85 × 6.36 × 4.36 mm
L/W Ratio1.08
Top View
6.85 mm6.36 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2457470388
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.6%

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: Nov 2
Current: $13,054 NZD|Low: $8,279 NZD|High: $13,054 NZD|Avg: $10,392 NZD|+3.7%
GemsNY
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
November 2, 2026
Retailer 7$8,612 NZD
Retailer 6$8,758 NZD
Retailer 11$9,077 NZD
Retailer 8$9,141 NZD
Retailer 3$9,356 NZD
Retailer 10$9,763 NZD
Retailer 9$10,337 NZD
Retailer 13$10,579 NZD
Retailer 5$10,614 NZD
Retailer 4$11,338 NZD
Retailer 12$11,338 NZD
Retailer 14$11,710 NZD
Retailer 2$11,904 NZD
GemsNY$13,054 NZD

39 data points across 14 retailers

15 retailers$8,612 NZD to $11,904 NZD

A
Cheapest Retailer
-
$8,612 NZD
$4,854 USD
B+
Retailer 2
-
$8,758 NZD
$4,936 USD
View
Retailer 3
-
$8,991 NZD
$5,068 USD
View
Price last confirmed 97 days ago
B+
Retailer 4
-
$9,141 NZD
$5,152 USD
View
Retailer 5
-
$9,356 NZD
$5,273 USD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
$9,452 NZD
CA$7,399 CAD
View
B+
Retailer 7
-
$9,763 NZD
$5,502 USD
View
B
Retailer 8
-
$10,337 NZD
$5,826 USD
View
Retailer 9
-
$10,579 NZD
$5,963 USD
View
Price last confirmed 26 days ago
B
Retailer 10
-
$10,614 NZD
$5,982 USD
View
B
Retailer 11
-
$11,338 NZD
$6,390 USD
View
B
Retailer 12
-
$11,338 NZD
$6,390 USD
View
B
Retailer 13
-
$11,710 NZD
$6,600 USD
View
B
Retailer 14
-
$11,904 NZD
£5,283 GBP
View
Most Expensive
GemsNY
N209508 · Oct 8
$13,054 NZD
$7,357 USD
View
Price last confirmed 25 days ago
14 more retailers have this diamond
Prices start from $8,612 NZDSave up to $3,292 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 Cushion
$8,612 NZD