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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6541862635

Certificate GIA 6541862635

Diamond specifications and retailer prices

From $4,806 AUD
As of November 6, 2026
Save $5,280 AUD (52%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,085 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541862635. Listed at 22 retailers as of November 6, 2026, with prices from $4,806 to $10,085, a $5,280 spread on the same certified stone. Wholesale Diamonds Direct lists it at $10,085. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.9°
OriginNatural
Grading LabGIA
CertificateGIA 6541862635
Dimensions7.56 × 6.03 × 4.16 mm
L/W Ratio1.25
Top View
7.56 mm6.03 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541862635
Side View
Table 64.0%CrownGirdle: STK-THKPavilion 36.9°Culet: NoneDepth 68.9%

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 6
Current: $6,386 AUD|Low: $4,806 AUD|High: $10,745 AUD|Avg: $6,697 AUD|-6.4%
Retailer 1
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
Wholesale Diamonds Direct
November 7, 2026
Retailer 18$4,806 AUD
Retailer 6$5,448 AUD
Retailer 17$5,529 AUD
Retailer 8$5,756 AUD
Retailer 10$5,758 AUD
Retailer 2$5,806 AUD
Retailer 3$5,851 AUD
Retailer 12$5,935 AUD
Retailer 5$5,954 AUD
Retailer 19$5,967 AUD
Retailer 14$6,056 AUD
Retailer 11$6,229 AUD
Retailer 4$6,347 AUD
Retailer 1$6,386 AUD
Retailer 7$6,436 AUD
Retailer 9$6,688 AUD
Retailer 13$7,076 AUD
Retailer 15$7,677 AUD
Retailer 16$9,990 AUD
Wholesale Diamonds Direct$10,085 AUD

20 data points across 20 retailers

22 retailers$4,806 AUD to $10,085 AUD

A
Cheapest Retailer
-
$4,806 AUD
A
Retailer 2
-
$5,448 AUD
View
A
Retailer 3
-
$5,529 AUD
View
Retailer 4
-
$5,756 AUD
View
Price last confirmed 10 days ago
Retailer 5
-
$5,758 AUD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$5,806 AUD
View
Final sale: no returns
A
Retailer 7
-
$5,851 AUD
View
A
Retailer 8
-
$5,935 AUD
View
A
Retailer 9
-
$5,954 AUD
View
A
Retailer 10
-
$5,967 AUD
View
A
Retailer 11
-
$6,056 AUD
View
Retailer 12
-
$6,229 AUD
View
Price last confirmed 8 days ago
A
Retailer 13
-
$6,347 AUD
View
A
Retailer 14
-
$6,386 AUD
View
Retailer 15
-
$6,436 AUD
View
Price last confirmed 8 days ago
Retailer 16
-
$6,688 AUD
View
Price last confirmed 18 days ago
B+
Retailer 17
-
$7,027 AUD
View
Retailer 18
-
$7,049 AUD
View
Price last confirmed 29 days ago
B+
Retailer 19
-
$7,076 AUD
View
B+
Retailer 20
-
$7,677 AUD
View
B+
Retailer 21
-
$9,990 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
626030070 · Nov 6
$10,085 AUD
$6,930 USD
View
21 more retailers have this diamond
Prices start from $4,806 AUDSave up to $5,280 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
$4,806 AUD