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Cushion|Natural|GIA

1.51ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 2556337276

Certificate GIA 2556337276

Diamond specifications and retailer prices

From $5,836 AUD
$4,090 USD
As of November 2, 2026
Save $6,670 AUD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,506 AUD at MOH London · As of October 29, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556337276. Listed at 21 retailers as of October 29, 2026, with prices from $5,836 to $12,506, a $6,670 spread on the same certified stone. MOH London lists it at $12,506. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556337276
Dimensions6.70 × 6.64 × 4.37 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.70 mm6.64 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556337276
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.7%

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: $12,506 AUD|Low: $5,753 AUD|High: $12,678 AUD|Avg: $7,839 AUD|-1.4%
MOH London
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 2$5,836 AUD
Retailer 14$5,845 AUD
Retailer 3$6,168 AUD
Retailer 10$6,475 AUD
Retailer 7$6,534 AUD
Retailer 4$6,571 AUD
Retailer 19$6,577 AUD
Retailer 11$6,656 AUD
Retailer 6$6,903 AUD
Retailer 18$6,962 AUD
Retailer 20$7,335 AUD
Retailer 15$7,410 AUD
Retailer 8$7,518 AUD
Retailer 13$7,541 AUD
Retailer 12$7,877 AUD
Retailer 17$8,897 AUD
Retailer 5$9,600 AUD
Retailer 16$9,603 AUD
Retailer 9$12,148 AUD
MOH London$12,506 AUD

22 data points across 20 retailers

21 retailers$5,836 AUD to $12,506 AUD

A
Cheapest Retailer
-
$5,836 AUD
$4,090 USD
A
Retailer 2
-
$5,845 AUD
HK$32,000 HKD
View
A
Retailer 3
-
$6,168 AUD
$4,323 USD
View
A
Retailer 4
-
$6,475 AUD
$4,538 USD
View
A
Retailer 5
-
$6,534 AUD
$4,579 USD
View
A
Retailer 6
-
$6,571 AUD
€4,386 EUR
View
A
Retailer 7
-
$6,577 AUD
$4,609 USD
View
Final sale: no returns
A
Retailer 8
-
$6,656 AUD
$4,665 USD
View
A
Retailer 9
-
$6,903 AUD
$4,838 USD
View
A
Retailer 10
-
$6,962 AUD
$4,879 USD
View
A
Retailer 11
-
$7,335 AUD
£4,048 GBP
View
A
Retailer 12
-
$7,410 AUD
£4,089 GBP
View
A
Retailer 13
-
$7,518 AUD
$5,269 USD
View
A
Retailer 14
-
$7,541 AUD
$5,285 USD
View
B+
Retailer 15
-
$7,789 AUD
View
Retailer 16
-
$7,877 AUD
View
Price last confirmed 23 days ago
B+
Retailer 17
-
$8,897 AUD
€5,938 EUR
View
B+
Retailer 18
-
$9,600 AUD
ZAR 108,691 ZAR
View
B+
Retailer 19
-
$9,603 AUD
$6,730 USD
View
Retailer 20
-
$12,148 AUD
$8,513 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
AD4A47712 · Oct 29
$12,506 AUD
£6,901 GBP
View
20 more retailers have this diamond
Prices start from $5,836 AUDSave up to $6,670 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
$5,836 AUD