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Cushion|Natural|GIA

1.50ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 5212917870

Certificate GIA 5212917870

Diamond specifications and retailer prices

From $6,086 AUD
$4,275 USD
As of October 31, 2026
Save $6,727 AUD (53%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $12,813 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded H 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 5212917870. Listed at 24 retailers as of October 31, 2026, with prices from $6,086 to $12,813, a $6,727 spread on the same certified stone. MOH London lists it at $12,813. 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

1.50
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5212917870
Dimensions6.22 × 6.14 × 4.53 mm
L/W Ratio1.01
Top View
6.22 mm6.14 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5212917870
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 73.8%

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: Oct 31
Current: $12,813 AUD|Low: $6,408 AUD|High: $12,967 AUD|Avg: $8,315 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8$6,408 AUD
Retailer 6$6,449 AUD
Retailer 9$7,287 AUD
Retailer 2$7,580 AUD
Retailer 4$7,848 AUD
Retailer 7$8,088 AUD
Retailer 3$9,102 AUD
Retailer 5$9,888 AUD
MOH London$12,813 AUD

35 data points across 9 retailers

24 retailers$6,086 AUD to $12,813 AUD

A
Cheapest Retailer
-
$6,086 AUD
$4,275 USD
A
Retailer 2
-
$6,285 AUD
$4,415 USD
View
A
Retailer 3
-
$6,355 AUD
$4,464 USD
View
B+
Retailer 4
-
$6,408 AUD
$4,501 USD
View
Final sale: no returns
B+
Retailer 5
-
$6,434 AUD
$4,520 USD
View
B+
Retailer 6
-
$6,449 AUD
$4,530 USD
View
B+
Retailer 7
-
$6,833 AUD
CA$6,667 CAD
View
B+
Retailer 8
-
$6,845 AUD
$4,808 USD
View
B+
Retailer 9
-
$6,848 AUD
$4,810 USD
View
B+
Retailer 10
-
$7,287 AUD
$5,119 USD
View
B+
Retailer 11
-
$7,580 AUD
£4,192 GBP
View
B+
Retailer 12
-
$7,658 AUD
$5,379 USD
View
B+
Retailer 13
-
$7,679 AUD
$5,394 USD
View
B+
Retailer 14
-
$7,848 AUD
£4,341 GBP
View
Retailer 15
-
$8,088 AUD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
$8,157 AUD
$5,730 USD
View
B+
Retailer 17
-
$8,157 AUD
$5,730 USD
View
B
Retailer 18
-
$8,428 AUD
$5,920 USD
View
Retailer 19
-
$8,875 AUD
$6,234 USD
View
Price last confirmed 10 days ago
B+
Retailer 20
-
$9,102 AUD
€6,089 EUR
View
B
Retailer 21
-
$9,268 AUD
$6,510 USD
View
B
Retailer 22
-
$9,888 AUD
ZAR 112,213 ZAR
View
B
Retailer 23
-
$11,651 AUD
$8,184 USD
View
Most Expensive
B
MOH London
8641C0CA0 · Nov 1
$12,813 AUD
£7,087 GBP
View
23 more retailers have this diamond
Prices start from $6,086 AUDSave up to $6,727 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
1.50ct Cushion
$6,086 AUD