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Cushion|Natural|GIA

0.50ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6555666199

Certificate GIA 6555666199

Diamond specifications and retailer prices

From $552 AUD
$388 USD
As of October 31, 2026
Save $1,852 AUD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,405 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.5ct natural cushion diamond

This 0.5ct natural cushion sits in the half to three-quarter carat band, graded D 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 6555666199. Listed at 13 retailers as of October 28, 2026, with prices from $552 to $2,405, a $1,852 spread on the same certified stone. Queensmith lists it at $2,405. 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

0.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555666199
Dimensions4.67 × 4.70 × 3.16 mm
L/W Ratio1.01
Top View
4.67 mm4.70 mm0.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555666199
Side View
Table 62.0%CrownGirdlePavilionCulet: NoneDepth 67.7%

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: Oct 31
Current: $2,405 AUD|Low: $552 AUD|High: $2,585 AUD|Avg: $1,182 AUD|-4.0%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 12$552 AUD
Retailer 6$602 AUD
Retailer 2$736 AUD
Retailer 11$750 AUD
Retailer 13$776 AUD
Retailer 10$785 AUD
Retailer 8$866 AUD
Retailer 7$915 AUD
Retailer 9$924 AUD
Retailer 4$1,122 AUD
Retailer 5$1,268 AUD
Retailer 3$1,425 AUD
Queensmith$2,405 AUD

33 data points across 13 retailers

13 retailers$552 AUD to $2,405 AUD

A
Cheapest Retailer
-
$552 AUD
$388 USD
Final sale: no returns
A
Retailer 2
-
$602 AUD
SGD 571 SGD
View
A
Retailer 3
-
$736 AUD
£407 GBP
View
A
Retailer 4
-
$750 AUD
£415 GBP
View
A
Retailer 5
-
$776 AUD
$545 USD
View
A
Retailer 6
-
$785 AUD
$552 USD
View
B+
Retailer 7
-
$866 AUD
$608 USD
View
B+
Retailer 8
-
$915 AUD
€612 EUR
View
B+
Retailer 9
-
$924 AUD
ZAR 10,486 ZAR
View
Retailer 10
-
$1,122 AUD
$788 USD
View
Price last confirmed 14 days ago
Retailer 11
-
$1,268 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
$1,425 AUD
£788 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Queensmith
6555666199 · Oct 28
$2,405 AUD
£1,330 GBP
View
12 more retailers have this diamond
Prices start from $552 AUDSave up to $1,852 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
0.50ct Cushion
$552 AUD