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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

GD • D/SI1 • GIA 1365547531

Certificate GIA 1365547531

Diamond specifications and retailer prices

From $1,384 AUD
As of November 4, 2026
Save $610 AUD (31%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,994 AUD at GemTrove · As of November 6, 2026
View at GemTrove

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1365547531. Listed at 8 retailers as of November 4, 2026, with prices from $1,384 to $1,994, a $610 spread on the same certified stone. GemTrove lists it at $1,994. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1365547531
Dimensions4.58 × 4.51 × 3.13 mm
L/W Ratio1.02
Culet sizeNone
Top View
4.58 mm4.51 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1365547531
Side View
Table 61.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 69.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,994 AUD|Low: $1,262 AUD|High: $2,265 AUD|Avg: $1,677 AUD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 14, 2026
Retailer 2$1,375 AUD
Retailer 5$1,384 AUD
Retailer 4$1,419 AUD
Retailer 3$1,466 AUD
Retailer 6$1,560 AUD
Retailer 8$1,761 AUD
Retailer 9$1,761 AUD
Retailer 7$1,819 AUD
GemTrove$1,994 AUD
Retailer 10$2,265 AUD

3 data points across 10 retailers

8 retailers$1,384 AUD to $1,994 AUD

B
Cheapest Retailer
-
$1,384 AUD
B
Retailer 2
-
$1,419 AUD
View
B
Retailer 3
-
$1,466 AUD
View
B
Retailer 4
-
$1,560 AUD
View
B
Retailer 5
-
$1,761 AUD
View
B
Retailer 6
-
$1,761 AUD
View
B
Retailer 7
-
$1,819 AUD
View
Most Expensive
C
GemTrove
GT-N-00945208-98 · Nov 6
$1,994 AUD
View
7 more retailers have this diamond
Prices start from $1,384 AUDSave up to $610 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
0.51ct Cushion
$1,384 AUD