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Cushion|Natural|GIA

1.51ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 6205595976

Certificate GIA 6205595976

Diamond specifications and retailer prices

From $14,522 AUD
As of November 6, 2026
Save $11,239 AUD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $25,761 AUD at MOH London · As of November 4, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6205595976. Listed at 20 retailers as of November 4, 2026, with prices from $14,522 to $25,761, a $11,239 spread on the same certified stone. MOH London lists it at $25,761. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6205595976
Dimensions7.17 × 6.84 × 4.49 mm
L/W Ratio1.05
Top View
7.17 mm6.84 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6205595976
Side View
Table 62.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 65.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $25,761 AUD|Low: $14,522 AUD|High: $26,139 AUD|Avg: $19,043 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$14,522 AUD
Retailer 7$14,663 AUD
Retailer 8$16,538 AUD
Retailer 4$17,606 AUD
Retailer 6$17,986 AUD
Retailer 2$19,143 AUD
Retailer 3$19,875 AUD
Retailer 5$24,129 AUD
MOH London$25,761 AUD

46 data points across 9 retailers

20 retailers$14,522 AUD to $25,761 AUD

B+
Cheapest Retailer
-
$14,522 AUD
Retailer 2
-
$14,663 AUD
View
Price last confirmed 16 days ago
B
Retailer 3
-
$15,343 AUD
View
B
Retailer 4
-
$15,346 AUD
View
B
Retailer 5
-
$15,694 AUD
View
B
Retailer 6
-
$15,794 AUD
View
B
Retailer 7
-
$16,308 AUD
View
Retailer 8
-
$16,538 AUD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$16,676 AUD
View
B
Retailer 10
-
$17,606 AUD
View
Retailer 11
-
$17,986 AUD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$18,302 AUD
View
B
Retailer 13
-
$19,133 AUD
View
B
Retailer 14
-
$19,143 AUD
View
B
Retailer 15
-
$19,240 AUD
View
B
Retailer 16
-
$19,240 AUD
View
B
Retailer 17
-
$19,875 AUD
View
B
Retailer 18
-
$19,881 AUD
View
B
Retailer 19
-
$24,129 AUD
View
Most Expensive
B
MOH London
E50A38A21 · Nov 4
$25,761 AUD
£13,937 GBP
View
19 more retailers have this diamond
Prices start from $14,522 AUDSave up to $11,239 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.

B+
1.51ct Cushion
$14,522 AUD