CaratHunter
Plans
Cushion|Natural|GIA

1.51ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 2233870089

Certificate GIA 2233870089

Diamond specifications and retailer prices

From $5,153 AUD
$3,611 USD
As of November 1, 2026
Save $5,228 AUD (50%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,380 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion 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 2233870089. Listed at 12 retailers as of November 1, 2026, with prices from $5,153 to $10,380, a $5,228 spread on the same certified stone. MOH London lists it at $10,380. 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
FluorescenceNone
Pavilion angle35.51°
OriginNatural
Grading LabGIA
CertificateGIA 2233870089
Dimensions7.60 × 5.86 × 4.06 mm
L/W Ratio1.30
Key to symbols
Crystal, Cloud, Needle
Top View
7.60 mm5.86 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2233870089
Side View
Table 65.0%CrownGirdle: MED-ETKPavilion 35.51°Culet: NoneDepth 69.3%

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 1
Current: $10,380 AUD|Low: $5,153 AUD|High: $12,286 AUD|Avg: $7,651 AUD|-14.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$5,153 AUD
Retailer 11$5,508 AUD
Retailer 10$5,529 AUD
Retailer 2$6,357 AUD
Retailer 8$6,635 AUD
Retailer 6$7,049 AUD
Retailer 7$7,049 AUD
Retailer 5$7,291 AUD
Retailer 4$7,379 AUD
Retailer 3$7,770 AUD
MOH London$10,380 AUD

44 data points across 11 retailers

12 retailers$5,153 AUD to $10,380 AUD

A
Cheapest Retailer
-
$5,153 AUD
$3,611 USD
A
Retailer 2
-
$5,508 AUD
$3,860 USD
View
Final sale: no returns
A
Retailer 3
-
$5,529 AUD
$3,875 USD
View
A
Retailer 4
-
$5,723 AUD
View
A
Retailer 5
-
$6,357 AUD
£3,508 GBP
View
B+
Retailer 6
-
$6,635 AUD
$4,650 USD
View
B+
Retailer 7
-
$7,049 AUD
$4,940 USD
View
B+
Retailer 8
-
$7,049 AUD
$4,940 USD
View
B+
Retailer 9
-
$7,291 AUD
$5,110 USD
View
B+
Retailer 10
-
$7,379 AUD
€4,925 EUR
View
B+
Retailer 11
-
$7,770 AUD
View
Most Expensive
B
MOH London
8B5F20B67 · Nov 2
$10,380 AUD
£5,728 GBP
View
11 more retailers have this diamond
Prices start from $5,153 AUDSave up to $5,228 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 Cushion
$5,153 AUD