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Cushion|Natural|GIA

1.80ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 5231935650

Certificate GIA 5231935650

Diamond specifications and retailer prices

From $5,904 AUD
HK$32,400 HKD
As of November 1, 2026
Save $6,902 AUD (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,806 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.8ct natural cushion diamond

This 1.8ct natural cushion sits in the one-and-a-half to two carat band, graded G 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 5231935650. Listed at 9 retailers as of November 1, 2026, with prices from $5,904 to $12,806, a $6,902 spread on the same certified stone. MOH London lists it at $12,806. 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

1.80
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle36.84°
OriginNatural
Grading LabGIA
CertificateGIA 5231935650
Dimensions6.84 × 6.81 × 4.70 mm
L/W Ratio1.00
Top View
6.84 mm6.81 mm1.80 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231935650
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 36.84°Culet: NoneDepth 69.0%

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: $12,806 AUD|Low: $5,849 AUD|High: $12,992 AUD|Avg: $8,442 AUD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5$5,904 AUD
Retailer 4$7,072 AUD
Retailer 7$7,510 AUD
Retailer 2$7,683 AUD
Retailer 8$7,927 AUD
Retailer 6$8,479 AUD
Retailer 3$9,075 AUD
MOH London$12,806 AUD

43 data points across 8 retailers

9 retailers$5,904 AUD to $12,806 AUD

A
Cheapest Retailer
-
$5,904 AUD
HK$32,400 HKD
A
Retailer 2
-
$7,072 AUD
$4,968 USD
View
A
Retailer 3
-
$7,510 AUD
SGD 7,129 SGD
View
A
Retailer 4
-
$7,683 AUD
£4,249 GBP
View
A
Retailer 5
-
$7,927 AUD
$5,568 USD
View
Final sale: no returns
A
Retailer 6
-
$8,474 AUD
View
A
Retailer 7
-
$8,479 AUD
$5,956 USD
View
A
Retailer 8
-
$9,075 AUD
€6,071 EUR
View
Most Expensive
B+
MOH London
50A3EE518 · Nov 1
$12,806 AUD
£7,083 GBP
View
8 more retailers have this diamond
Prices start from $5,904 AUDSave up to $6,902 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
1.80ct Cushion
$5,904 AUD